Is this possible:
I'd like the comments area to show the commenter's gravatar if they have one. If they don't, I'd like nothing to show up (not even a blank).
I have posts with hundreds of comments and the pages have to load hundreds of calls to gravatar.com for the default gravatar and it bogs down the page loading time. I'd rather nothing show up (not even a blank since that calls gravatar.com).
Is it possible to do?