Facebook has updated its rules for fan page cover images, removing rules against calls to action, contact info, references to price, or purchase information. The one major rule that remains is the 20% limit for text overlay.
Here is the new rules for cover images: Facebook Fan Page Guidelines
CoverAll covers are public. This means that anyone who visits your Page will be able to see your cover. Covers can’t be deceptive, misleading, or infringe on anyone else’s copyright. You may not encourage people to upload your cover to their personal timelines. Covers may not include images with more than 20% text.
Here are the old rules:
Covers may not include:
i. images with more than 20% text;
ii. price or purchase information, such as “40% off” or “Download it on socialmusic.com”;
iii. contact information such as a website address, email, mailing address, or information that should go in your Page’s “About” section;
iv. references to Facebook features or actions, such as “Like” or “Share” or an arrow pointing from the cover photo to any of these features; or
v. calls to action, such as “Get it now” or “Tell your friends.”
Now it’s time to get more creative with your Facebook marketing! Check out this detailed article on creating a fan page cover image. HERE