There have been numerous reports of phishing attempts this past weekend being propagated throughout Facebook. Facebook users are receiving messages that contain a link in a format similar to:
Clicking on the link (or previewing it) will redirect you to a malicious site which impersonates the Facebook login page in an attempt to steal your Facebook credentials. In addition, many of these malicious sites will attempt to silently infect your computer.
If you receive any Facebook messages like this, simply delete them without clicking on the link.
In general, while making on-line life easier, tinyurl links make it far too easy for malicious users to hide the true nasty destination they’re trying to send you to. To stay aware of what you’re clicking on, I recommend avoiding tinyurl links altogether.