We’ve listed all the social sites, that we are currently aware of, that offer hard (dofollow) links. We’ve also included all the social sites that add a nofollow to the link and social sites that just do a redirect on links.

We would like to expand this list, so please send us links to other social sites, particularly sites that provide a hard link.

Hard links DoFollow

http://digg.com (with keywords in title)
http://www.reddit.com (with keywords in title)
http://www.oyax.com (with keywords in title)
http://www.freelink.org (with keywords in title)
http://www.syncone.net (with keywords in title)
http://spotback.com (with keywords in title)
http://www.blipoo.com (with keywords in title)
http://www.tumblr.com (with keywords in title)
http://buddymarks.com (with keywords in title)
http://www.connotea.org (with keywords in title)
http://www.contentpop.com (with keywords in title)
http://www.indianpad.com (with keywords in title)
http://earthfrisk.com (with keywords in title)

http://www.mister-wong.com (with keywords in title, although this site will make all your links “private” if they get the slightest whiff of spam)
http://www.searchles.com (with keywords in title, although this site will make all your links “private” if they get the slightest whiff of spam)
http://www.plime.com (with keywords in title, although this social site is really particular about stories submitted. They must be unusual or weird stories.)

http://multiply.com (hard link on URL only)
http://sphinn.com (hard link on URL only)
http://www.mixx.com (hard link on URL only)
http://www.blogbookmark.com (hard link on URL only)

http://www.quickieclick.com (hard link on images only)

Hard links NoFollow

http://delicious.com (with keywords in title)
http://www.diigo.com (with keywords in title)
http://claimid.com (with keywords in title)
http://faves.com (with keywords in title)
http://www.jumptags.com (with keywords in title)
http://www.clipclip.org (on URL only)
http://www.stumbleupon.com (on images only)

Redirects

http://furl.net (URL text display)
http://www.folkd.com (URL text display)
http://www.propeller.com (URL text display)
http://www.streakr.com (URL text dispay)
http://www.dizzed.com (URL text display)