http://code.google.com/p/clipperz/wiki/CommunityEdition
clipperz..available as a online service, or roll your own server with the community edition..a single-sign-on for the webs...

http://keepass.info/
native app to do the same thing..interestingly the linux port got ported back to windows or something like that...http://www.keepassx.org/

http://sparkleshare.org/
opportunity to eventually roll your own dropbox/zumodrive..now u can only sign up to their server, use it on linux only and use storage on gitorious or github...

http://www.cl.cam.ac.uk/~rja14/tcpa-faq.html
trusted computing..

http://news.cnet.com/8301-13579_3-20015734-37.html
why itunes song samples are 30s long..