It's free for use too… they have a very inexpensive pro version that gives you mobile device support and a few other things. I use unique, long, randomized pw's on every site. Two factor authentication works with Google Authenticator too.
via +Leon Broca: If you want in depth analysis of why and how secure it is, Steve Gibson, THE guy on security, approved it. http://blog.lastpass.com/2010/07/lastpass-gets-green-light-from-security.html
Reshared post from +Simon Cousins
Use LastPass !