1. I actually disabled Gravatar after reading this post and my page load decreased from over 20 seconds to under 5 seconds for some of my most popular posts. So yeah, don’t think I’ll be turning it anytime soon.

  2. If you have lots of comments, you be better off paging them instead of disabling gravatars. Gravatar.com is blazingly fast, and while hitting it a lot does hurt performance, having a few hundred comments on a page hurts a lot more. Render time can get very high, very fast, on long pages.

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