per cominciare:
www.duespaghi.it
www.grouprecipes.com
poi, tra i tanti:
- blogs: www.blogspot.com / www.technorati.com
- wiki: www.wikipedia.org / www.learningwiki.com
- social networks: www.intronetworks.com / www.meetup.com / www.orkut.com / www.linkedin.com
- cscw: docs.google.com
- search engines: answers.yahoo.com / www.alexa.com
- social tagging & sharing: del.icio.us / www.flickr.com / www.slideshare.net / www.youtube.com / www.stickam.com
- podcasting: www.apple.com/it/itunes / www.talkshoe.com
- 3D social environments: secondlife.com
- IM: get.live.com / www.myspace.com / www.skype.com
