Not Roboform but a good firefox extension taht does the job for free

savemoney

Just found this today its free, its a extension plugin for firefox it stores you login/data online in a secure web site.

So far it seems fine it can import you firefox password as well as roboform

https://lastpass.com/

lastpass is an online password manager and form filler that makes web browsing easier and more secure.


v1.51 download options

Create strong passwords, knowing you only have to remember one. Log into your favorite sites with a single click Fill forms in a second; stop pulling out your wallet to get your credit card number Access and manage your data from multiple computers seamlessly Securely share logins and notes with friends and let others share with you A BETTER ONLINE EXPERIENCE Stop wasting time worrying about forgotten passwords, and stop wasting time filling out forms; LastPass does it for you.
GAIN CONTROL Use strong passwords encrypted exclusively on your PC but accessible online, so you can retrieve your information from virtually anywhere, anytime.
IMPROVE SECURITY Passwords are locally encrypted and stored on your PC, Mac or Mobile Device. Only your LastPass password can unlock your data and only YOU

unhappyvirgincustomer_2

Create strong passwords, knowing you only have to remember one

xmarks does that and backups all your bookmarks too plus it synchronises your bookmarks and passwords across multiple computers. Never ever have to remember a password again with xmarks and it securely backs it all up online but with the one you have you'd have to somehow backup your passwords manually if you need to reinstall windows or get a new pc

Xmarks works on firefox, safari, Internet Explorer and coming soon for chrome and opera too

http://www.xmarks.com/