I don't use it, and I wouldn't.
This kind of product has to be open source for it to be at all secure. Right now, you have no idea if it's storing your passwords properly or not, let alone the risks of backdoors.
On Windows I use KeePass. It does basically the same thing, is free and open source, and has been checked out by some industry professionals I trust to do their job well.
http://keepass.info/
Carry it on a USB stick, and you can use it from any computer. KeePassX is the Unix-variant for Mac OS X, GNU/Linux systems, etc.