This is a quick shout to the guys at LastPass - great service, and even greater if you go for the "Premium" edition (which costs a staggeringly astronomical £7.66 per year)
It's highly rated by the security geeks (Steve Gibson and Leo Laporte) who do the Security Now podcasts, listen to/watch episode 256 for the review.
Excerpt from iTunes:
Security Now 256: LastPass Security
ReleasedJul 10, 2010
Hosts: Steve Gibson with Leo Laporte Steve thoroughly evaluates LastPass, explains why high-security passwords are necessary, and tells us how LastPass makes storing those passwords secure. Download or subscribe to this show at twit.tv/sn. We invite you to read, add to, and amend our show notes. For 16kpbs versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6. Audio bandwidth is provided by Winamp, subscribe to TWiT and all your favorite podcasts with the ultimate media player, download it for free at Winamp.com. Running time: 1:54:05