[Bannedshee]

There is no such thing as "free" in this area. There are logs, and when they do delete them on the servers, they make backups before them. Possibly also, they look through for usernames and passwords, be careful.

Spoiler:

"Privacy Policy
Our privacy policy is simple, we respect your privacy since we do not host our servers in countries where mandatory data retention laws exist, we do not collect any information or log any internet activity. We are not required by law to hand any information over unless by court-order, and to date Romania has been one of the best locations for privacy. The only thing we log is the I.P address and time the connection was made. Connection logs are automatically deleted every 3 days, if authorities contact us we simply tell them we have no logs. You (the user) is responsible for your actions or damages caused by using our free VPN service, DO not use this VPN for doing evil and you will be fine. If you do abuse the system, your I.P will be banned. To report abuse please email abuse@vpnbook.com"

Well this is their privacy policy, and I doubt that they would steal logins, VPNBook is pretty trusted.