The relaxing of Facebook's cover photo rules a couple of months ago means that marketers now have a lot more freedom in the type of stuff they can add to the design of them - calls to action, contact details, asking people to like your Page, etc.... as long as the total amount of text does not make up more than 20% of the image.
The Facebook cover photo is a hugely powerful piece of prime real state for your Page, and people love to get free stuff - so I have combined the two in my newest one, as you can see above, asking viewers to click to receive a free copy of my e-book, How to Measure Social Media ROI.
Of course, clicking on a Facebook cover image only enlarges the photo and does not load a new web page, but the action does make the photo's description visible, and it's here that I have added the actual newsletter sign-up URL.
I hope this has given you some inspiration for your own Facebook Page cover photo!
ABOUT THE AUTHOR
Andrew Macarthy is the author of the #1 Amazon Bestseller, 500 Social Media Marketing Tips.