Free backlink sources that you must have

What kind of free backlink sources you should to use?

We do need backlinks, but the firsts steps are never easy. When I start a new project, especially micro niche websites I always boost my new page with some juicy backlinks from a web2 website. Here is my not to secret list.

sodmg.com
wordpress.com
weebly.com
wix.com
moonfruit.com
zoho.com
purevolume.com
sites.google.com/site
tumblr.com
yola.com
webs.com
zimbio.com
webnode.com
Jimdo.com
puzl.com
business.blinkweb.com
page.tl
Bravenet.com
shutterfly.com
poptent.net
smore.com
webjam.com
livejournal.com
zoints.com
pen.io
myanimelist.net
all4webs.com
roxer.com
octomobi.com
xbuild.com
beep.com
eznow.com
journalhome.com
1minutesite.co.uk
ucoz.com
zoints.com
ewebsitemaker.com
arto.com
fanvsfan.com
webeden.co.uk
jux.com
hpage.com
ezweb123.com
whydowork.com
singsnap.com
sitew.com
lightcms.com
puzl.com
webstarts.com