Do you think spam is a big problem on Facebook?

Sanford Wallace is accused of compromising about 500,000 Facebook accounts between November 2008 and March 2009 by sending massive amounts of unwanted ads. (Dan Loh/ Associated Press)






























Wallace now faces the possibility of more than 40 years in jail in addition to a fine of $2 million US.

A judge banned him from using social networking sites in 2009, but authorities say he has violated that ban.

The indictment filed in San Jose federal court said Wallace compromised about 500,000 Facebook accounts by sending "phishing" messages that tricked users of the social networking site into providing their passwords. 

Do you think spam is a big problem on Facebook? Have you ever received a suspicious "phishing" message through Facebook? Tell us your story in the comments below.