Social bookmarks and the "nofollow" link relation
Social bookmarking and tagging networks let you save and organize your favorite web sites online. They are also a good resource for webmarters, as they let you build incoming links by storing bookmarks to the desired sites. However, many of this networks use the nofollow link relation to prevent spam. This has come to degrade the usefulness of this kind of sites for link building.
Bookmarking networks that use direct links
The following social bookmarking sites use plain old direct links, that is, links without the "nofollow" link relation attribute value.
www.folkd.com
Bookmarks and more. Available in 4 languages.
www.givealink.org
An ongoing project of the Indiana University.
www.mister-wong.com
European site, available in several languages.
www.mixx.com
Social networking and bookmarks with web syndication, blogging and personalization tools.
www.mylinkvault.com
Lacks the social component but lets you store and categorize bookmarks (public or private).
www.oyax.com
Easy to use bookmarking site with a clean interface.
www.11870.com
Developed in Spain, it was later made available in English and Catalan.
Bookmarking sites that put restrictions on links
The following bookmarking sites do not use "nofollow", but they have some restrictions to prevent spam.
www.blogmarks.net
Bookmark sharing and tagging built on a blog basis. Registration is by invitation only.
www.digg.com
Social news site. Does not allow links to certain domains (mainly free hostings).
www.feedmarker.com
A bookmarker and newsreader with tagging. Registration is by invitation right now.
Bookmarking sites that use indirect links
The following bookmarking sites do not use "nofollow", but they use indirect links. When it comes to link building, this kind of links are more useful than "nofollow" direct links.
www.furl.net
Allows storing and annotating the bookmarked web pages.
www.gennio.com
Hispanic community. Bookmarks are indirect but they are picked up by Google.
ma.gnolia.com
A tagged bookmarks site with an emphasis on community.
myweb.yahoo.com
Yahoo's social bookmarks offering.
www.propeller.com
A social news website operated by AOL.
Bookmarking sites that use nofollow links
Finally, here is a list of social bookmarking sites with "nofollow" links. They have very little use for link building, but a link here may still get you some traffic.
www.blinklist.com
Available in several languages.
del.icio.us
Probably the most popular bookmarking service.
diigo.com
This service allows to highlight and add sticky notes to web pages.
www.faves.com
A social bookmarks site formerly called Blue Dot.
www.netrocket.com
A tagged bookmarks site with the possibility to schedule reminders.
www.oneview.com
Available in English and German.
www.reddit.com
Social news site. Really crude interface.
www.simpy.com
One of the oldest bookmarking services that still operates.
www.stumbleupon.com
Another way to tag and find favorite pages, photos and videos.
