*responsinator
* web test
3.*colormatch
*XML Sitemap
*favicon.cc
*Mã địalý geocoding
*mylivechat-free
*zippyshare.com
*goo.gl
pingmyurls
pingmylinks.com > addurl
pingmylinks.com > socialsubmission
pingmylinks.com > searchsubmission
*bulklink.org (2500 link)
backlinkr.net (2500 link)
indexkings.com
pingler.com
Submit PR cao
smallseotools.com
pingomatic.com
brainbliss.com
totalping.com
smallseotools.com (92 link)
free-backlinks.net
sitowebinfo.net (2500 link)
seounity.com
hawkwebtools.com (2512 link)
submitexpress.com
pingfarm.com
hitleap.com
pingbomb.com
autohits.urani.vn
10khits.com
autosurf.com.au
otohits.net
otohits.net
hit4hit.org
alexasurf.net
(*)browsershots
extremetracking
w3-directory
hubpages
feedage
flickr
w3.org
disqus
last.fm
codecademy
adobe
traffbost.net
traffup.net
2pink.org
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