Many consumers find the popular social media site, Twitter, useful for staying in touch with friends and family and getting updates from organizations or famous people. Unfortunately, scammers see the millions of Twitter users very differently: as potential targets.

Scams on Twitter usually involve some kind of link or promise from either a user you don't know or a user whose account has been compromised.

A common scheme is for a scammer to create an account then follow or direct message hundreds or thousands of other users. Each time a user is followed, they receive an alert with a link to the scammer's profile. The profile often contains links to malware or phishing sites. A recently popular method of this is a direct message or tweet with a message like "LOL is this really you?" with a link attached.

Yet another scheme scammers use is to post something that leads to a link that looks like a Twitter login page, but isn't, and thus when a user types in his username and password, the fraudster has access to their account and can use it to target others.

Other signs of a fraudulent account are: repeatedly posting duplicate updates, abusing basic functions of Twitter to get attention, and posting links with unrelated tweets.

How can Twitter users avoid falling for a scam? Click here for tips from NCL's Fraud Center.