Add Gravatars to your comments without modifying any template files. Just activate, and you're done!
The Gravatar service allows you to register multiple email addresses. Make sure that the email address you use in your WordPress comments matches an email address registered on the Gravatar server.
Also, check the rating of your gravatar versus the maximum allowed rating in the Easy Gravatar options. If your gravatar is rated 'R', but you set the maximum Easy Gravatar rating to 'PG', the image will be blocked.
In some cases, there have been reports that Internet Explorer 6.0 does not display gravatars properly. This is probably due to CSS bugs in IE6. I will try to isolate this as time allows, but the best advice is for users to upgrade to IE7 (for security and better standards support), or to use another browser, like Firefox or Opera.
You may have another plugin which is conflicting with Easy Gravatars. In particular, Joost de Valk's Google Analytics plugin version 1.3 also tried to modify the comment author link. Upgrade to version 1.4 or higher of his plugin, or select the "Comment Text" API hook in Easy Gravatar's Advanced Options.
The placement of the Gravatars within your comments template is controlled
Span style and
API hook options. The gravatar is rendered as an
image tag within a span, which is prepended to either the comment author
information or the text of the comment, depending on the hook selected.
The default options should work fine with most WordPress templates, but there's always the chance that a template with a complex layout might have a conflict. If simply changing the API hook selection doesn't give a result which is to your liking, you will need to modify the CSS in the span style.
Sorry, but help with CSS styling is beyond the scope of this document.
Yes, WordPress 2.5 added native support for Gravatars. However, older themes don't support them. If you are using a theme which doesn't already support adding Gravatars, you either need to modify the templates yourself, or use Easy Gravatars to add them automatically for you.