On one of the groups I own I change the cover photo regularly -- doing whatever I can think of to entice more members to visit the website -- usually tied in with something being discussed. Today I decided to use a GIF snow scene. So far it displays just fine -- I use Firefox -- though I'm not sure it will display actively in every browser.
I wonder though, is there a downside to using GIFS as cover photos that I should be aware of?
tommy0421