Facebook has made its grand entrance into the geolocation space with Facebook Places. Will users embrace it and ditch Foursquare?

That's the question we posed in this week's Web Faceoff, our ongoing series comparing technology apps or ideas. We asked you which location-based service you preferred: Facebook Places or Foursquare?

This week's winner: Foursquare! The contest wasn't even close; with 57.11% of the vote (1,611 votes), Foursquare remained the king of geolocation. Facebook Places was able to muster 18.86% of the popular vote. Of our voting readers, 7.73% (218 votes) said it was a tie between the two, while 16.31% of you (460 votes) said that you preferred another location-based service.

Many of you pointed out that Facebook Places and Foursquare are likely to be used by different types of people for different purposes. "Facebook is going for the people who want to connect every part of their Facebook experience to a location, while Foursquare is going for a games-based market," said commenter Anuj Ahooja. Others pointed out that while they preferred Foursquare, Facebook's userbase of 500 million (and counting) will make tough competition for any startup.

What do you think this week's poll results? How will the competition between the two companies play out? Let us know in the comments.