I joust found a legit page that gives 310 FarmCash for free ,for just 5 minutes , it’s here , check it + Link
Scam Type: Survey Scam, False Game Currency Offer
FarmVille players: If you see a friend post a message in your news feed like the one below, Do not fall for it. Do not click on any of the links in the messages. See Example.
If you make the mistake of clicking on any of the links within this message you will be redirected to the website shown below.
Example (310 FarmCash For Free Website) - Click to Enlarge
Basically the writing on the page explains that you need to follow the given steps to receive your free farm cash from this promotion. The first 3 steps on the page are simply designed to get the "Mark" to spam his or her friends with the pages bogus claims. Once they have finished those steps, they are urged to click the 4th an final link on the page to claim their free farm cash. Clicking the final link exposes nothing more then another Survey Scam. See Below.
Example ( 310 FarmCash For Free Survey Scam )
The process above is suppose to "Qualify" you to receive the free cash offer, but sadly is nothing more then a ploy to get you to download a product or do a Survey for which a scam artist will be paid. This is not a legitimate facebook FarmVille promotion and for the record, you will never receive any game currency by this method. If you see this scam posted in your feed, do not click any of the links. See example.
It is important that you never hand over any personal information, such as: email addresses, cell number, name, home address or credit card numbers, to these types of scams. If you do, you are simply setting yourself up to be spammed or worst. Identity theft is big business and handing over some of the info these bogus surveys ask for, will make you a victim of that business. If you have made the mistake of handing over a credit card number, you should call your bank or credit provider as soon as possible to have them remove or dispute the charges that have or maybe made to the card. If you've given your cell number to any of these types of Scams, it is important that you call your cell carrier ASAP to have any charges you may receive stopped. If you begin to receive unsolicited phone calls, you should take note of the calls, record names and numbers, then report the calls to the FCC or other proper authorities..
Read here to learn how to avoid these types of scams on facebook.
Damage Control ( For those who have fell victim. )
If you have fell victim to any of these scams, you need to clean up your facebook profile immediately by removing the posts they made to your wall and then removing plus blocking the rogue application that you may have install to your facebook. If you've downloaded and installed any programs to your computer, it is advised that you run a full virus scan immediately. At the link provide below you will find helpful information to assist in these task, if you are not sure what to do..
Stay Virus Free