Survey says 6 in 10 have seen a ghost; Snakes the most common fear.

If you've seen someone who looks like they've just seen a ghost, you may be right: a survey conducted by Groupon says that six in 10 Americans have seen one.

The survey of 2,000 adults commissioned by the Internet discounting company noted that four in 10 say their pet has seen a ghost, too.

The most common response to touching the etheric plane? Screaming and running from the specter, according to the poll -- with men doing so twice more often than women. Others copped to crying, fainting, or hiding.

With Halloween as the topic, Groupon also wanted to know what scares us the most. Here were the top 10 most common fears:

1. Snakes
2. Spiders
3. Sharks
4. Drowning
5. Heights
6. Public speaking
7. Failure
8. Bees
9. Cramped spaces
10. Rejection