Hot selling service for SEO is social bookmarking service.
Social bookmarking can really make search engine find your site and services very fast. You can try out with list of sites provided below which accepts social bookmarking. Just note down the daily visitors once you do it. 
1 http://spotback.com/
2 www.multiply.com
3 http://www.blinklist.com/
4 http://www.citeulike.org
5 http://mystuff.ask.com
6 http://www.mister-wong.com/
7 www.business-planet.net/
8 www.sitejot.com/add.php
9 www.Bibsonomy.org
10 http://www.diigo.com
11 www.Jumptags.com
12 http://www.kaboodle.com
13 http://www.linkagogo.com/
14 http://www.givealink.org
15 http://www.weheartgossip.com
16 https://www.chipmark.com
17 http://www.yattle.com/myyattle/favorites.php?groupId=infos10167
18 http://www.bookmarktracker.com
19 http://www.humsurfer.com/
20 www.Socialogs.com
21 http://www.mypip.com
22 http://www.favoor.com/
23 www.indianpad.com/
24 http://www.i-am-bored.com
25 bookmarks.oneindia.in
26 www.bestofindya.com
27 www.kwoff.com
28 www.web2list.com
29 www.newscola.com
30 www.indiantags.com
31 www.gaddiposh.com
32 www.cloudytags.com
33 www.swocialdanger.com
34 www.wobblog.com
35 www.diggdirect.com
36 www.bookmark4you.com
37 www.quadriot.com
38 www.kapely.net
39 www.yoorl.com
40 www.bookmarkall.com
41 www.it-ideas.com
42 www.lifeinnews.com
43 www.newzly.com
44 www.fcc.com
45 www.getboo.com
46 www.pinoymug.com
47 vwww.eryhotlinks.com
48 http://www.jackool.com/
49 www.webmaster911.com
50 www. th3scoop.com
51 www.highvibeit.com
52 www.jetmarks.com
53 www.cmymark.com
54 www.squigglr.com
55 www.spotonce.com
56 http://www.digufun.com/
57 www.starton.us
58 www.homebusinessvoices.com
59 www.ludicrous.net
60 www.rockvibes.net
61 www.latestramblings.com
62 http://www.brightsapphire.com/
63 www.socialbookmarkwebsite.com
64 www.wordofblog.org
65 www.blizzardzz.com
66 www.bookmark-tag.com
67 www.blessedit.com
68 http://addthisto.com/
69 www.spurl.net
70 http://www.whatnwhen.in/
71 www.linkvote.com
72 www.7878748.com
73 www.newsroom.ie
74 www.mypinkcheese.com
75 www.q8igg.com
76 www.under-link.com
77 www.myfavlinks.com
78 http://www.mashfactor.com/
79 www.harrrd.com
80 www.opfiles.com
81 www.moogme.com
82 www.v0v.com
83 www.xmaui.com
84 www.edensavr.org
85 www.submitnews.savethesoldiers.com
86 www.zoeblog.com
87 http://www.seovoter.com/
88 www.desigrade.com
89 www.indiarooster.com
90 http://www.socialmedia1.com/
91 www.tryhit.com
92 www.gcurious.com
93 http://www.bookmarkus.net/
94 http://ebookdealz.com/
95 www.celebhungama.com
96 http://www.affiliated-business.com/
97 http://www.takemetop.com/
98 http://www.thezer0.com/
99 www.rapid-i.org
100 http://www.webgare.com/
101 http://www.wedigg.co.uk/
102 http://www.sitesmash.com/
103 www.littledidyouknow.com
104 http://www.techinreview.com/
105 http://www.chaamp.com/
106 www.wagg.it
107 http://broadcast.firstclassfashionista.com/
108 http://mybookface.net
109 http://www.indiasphere.net
110 http://www.rambhai.com
111 http://arts.plime.com
112 http://www.indianbytes.com
113 http://www.smallbusinessbrief.com
114 http://business-planet.net
115 http://www.designfloat.com
116 http://dekut.com
117 http://tipd.com
118 http://www.actualtopics.com/
119 http://bharatinfo.com
120 http://www.wedelia.com
121 http://bookmarks.newsbeet.com/
122 http://bbs.shang-shan.com
123 http://reviewmysite.temi.co.uk
124 http://emsplanet.corank.com
125 http://news.netscype.com
126 http://altnewsonline.com
127 http://www.ad-bookmark.co.cc
128 http://newskicks.com
129 http://www.graphic-design-links.com
130 http://www.biginternetdirectory.com/
131 http://www.yeawo.com
132 http://www.toprankclassifieds.com
133 http://www.scoopsanta.com
134 http://www.rescuebuzz.com
135 http://www.playgroundbaby.com/
136 http://www.oopza.com/
137 http://www.oldrec.com
138 http://www.potongstim.com
139 https://sourceforge.ne
140 http://www.womcat.org
141 http://supr.c.ilio.us
142 http://www.ka-boom-it.com/
143 http://www.gather.com
144 http://www.blogbookmark.com
145 http://www.knowsite.org/
146 http://www.bookmark24.eu
147 http://www.ipopu.com
148 http://superblipsbros.dailyradar.com
149 http://www.inboundmarketing.com/
150 http://design.fr
151 http://freenormous.com
152 http://commons.foodhackers.com
153 http://www.cyclopedia.theeldersign.com
154 http://news.bramptonregister.com/
155 http://content.superwickedawesome.com
156 http://pligacz.wnecie.info
157 http://www.sporticts.com
158 http://www.pittsburgh.juicytown.com
159 http://fr8mvr.com/
160 http://news.bramptonlistings.info
161 http://quepasalatinos.com
162 http://www.squigledoo.com/
163 http://oidobarra.com
164 http://telenoticias.info
165 http://bujjo.com
166 http://elanforum.com
167 http://www.gadgetary.com/
168 http://cachondeamela.com
169 http://designmoo.com
170 http://mmanewsweekly.com
171 http://nakedbits.com
172 http://www.bakerlayouts.com
173 http://www.nippondit.com
174 http://www.likeabullet.com
175 http://www.postandvote.com
176 http://www.clonesattack.com
177 http://www.napoligg.com
178 http://www.zaroorathai.com
179 http://www.asiansportsbuzz.com
180 http://www.thefaithcafe.com
181 http://www.roadaholics.com/
182 http://www.coolsearchinfo.com
183 http://www.votedmostpopular.com
184 http://www.social.letslinkin.com
185 http://www.social.topredline.com
186 http://www.just4desi.com
187 http://www.oomega.com/
188 http://persianhaps.com
189 http://www.blessingg.com
190 http://www.bullmarkit.com
191 http://britainsgotdiscounts.com
192 http://mt4indicators.com
193 http://advertest.net
194 http://www.listyourpost.com
195 http://find.de
196 http://www.pressjunket.com
197 http://www.wrrx.com/
198 http://www.cookingbits.com
199 http://www.healthbookmarks.com
200 http://www.zeezag.com
201 http://zzygg.com
202 http://www.pligg.bloggrove.com
203 http://www.gobigg.com
204 http://freearticlelive.com
205 http://www.shopliftd.com/
206 http://www.liiink.com
207 http://www.indimine.com
208 http://www.freebiesup.com
209 http://bookmarks.directory-list.com/
210 http://newsmeback.com
211 http://www.thegreenroll.com
212 http://www.tagdigg.com
213 http://untravel.org
214 http://yosoc.org
215 http://www.kasoc.org
216 http://www.snapd.org
217 http://www.twimark.com/
218 http://www.dugmark.com/
219 http://www.dwd21.com
220 http://www.markzoom.com/
221 http://www.famark.com
222 http://www.folkdiggs.com
223 http://www.gabmark.org
224 http://folkmark.com
225 http://tangueame.com
226 http://gabmark.com
227 http://greensocialtech.com
228 http://bookvark.com/
229 http://www.listofadvertisers.com/
230 http://tagbuzz.org/
231 http://goldenbookmarks.com/
232 http://afunpark.com
233 http://blurp.co.za/
234 http://joomla-templates-club.com/
235 http://diggmarks.com/
236 http://worldpharmanews.net/
237 http://www.kabuls.com/
238 http://tagmaker.org
239 http://bookzzle.com
240 http://pressitfor.me/
241 http://tagzzle.com/
242 http://youmob.com/
243 http://diggtags.com/
244 http://bookmarkdevil.com/
245 http://www.koreantopnews.com
246 http://citijournalist.com/
247 http://wirepost.com/
248 http://www.wattflyer.com/
249 http://markalizer.com
250 http://socialitect.com/
251 http://bookfox.org/
252 http://dugstories.com/
253 http://raidx.co.uk/
254 http://markpad.org
255 http://socialope.com/
256 http://cyclecluster.com/
257 http://tagzio.com/
258 http://twisoc.com/
259 http://joomlavote.com/
260 http://dealshouter.com/
261 http://tagitect.com/
262 http://www.yomash.com/
263 http://crazywaves.info/
264 http://chatintamil.org
265 http://listyoururl.com/
266 http://freebieslinkshare.com/
267 http://societyweb.info/
268 http://marathikatta.com
269 http://scuttleplus.com/
270 http://www.faqpal.com/
271 http://www.babblestorm.co.uk/
272 http://dofollow.us/
273 http://votocilina.com/
274 http://www.efixx.com/
275 http://www.justtech.org/
276 http://wpthemez.com/
277 http://www.sustaind.org/
278 http://www.socialn.net
279 http://twittl.com/
280 http://seek4news.com/
281 http://www.earnersclub.net/
282 http://ptnoticias.com/
283 http://fantasysportsexperts.com
284 http://www.socialseo.com/
285 http://www.joseluispretto.com/
286 http://www.dealdigs.com/
