I am developing a new social site, which is going to go live in February or March. (if you are curious it is: http://www.chilledlime.com)<p>Now, I have to make a decision on how to get avatars.<p>Should users be able to upload an image? Or should I let them link to an external image? Or the third option: Gravatars?<p>What do you think? Is it OK to use Gravatars or maybe I should use something that is more customizable?