FrontierVille -- if you give a little, you get a little. In this case, that means if you're willing to give up a little privacy by allowing the new pioneer-themed Facebook game send you emails, you'll get a free horse for your land.
If you want the free pony (and who doesn't want a pony?) -- here's what you gotta do. When you load the game, keep an eye out for a pop-up notice from Pioneer Jack asking for your email. If you agree, you will receive an email with a link that will give you a new horse. The email came right away and looks like this (see image below).
Many have complained that they signed up to receive FrontierVille emails and did not receive the horse. If that's the case, you should try signing up for email again or, alternately, try your luck at clicking the following link.
NOTE: We have not confirmed that this works, AND you are not able to collect more than one free horse.
Once you load the game, you'll receive the following message. Click 'Yes' to accept the horse.
Then open your gift box (the gift box is located in the My Stuff Menu), and you'll see that Frontier Jack has sent you a gift -- a light brown horse.
Click use to move the horse to your farm, then place it where you like. Like the other animals, your horse starts out as a mere pony, but after feeding it a few times, you'll have a full-grown horsey to add to your menagerie.
Did you have any problems getting your free horse in exchange for giving up your email? Drop a note in the comments below.