There are several ways you can sniff out and identify a fake text message that is probably part of a scam.

If you have taken a New York City subway recently, you probably know about Friend. More than 10,000 posters advertising the tech startup popped up in MTA stations across the city at the end of August.

It's not easily apparent when someone has blocked you on Facebook. However, here are 7 ways that may indicate they have done so.