Create Your Gravatar Widget
You must be ever heard about MyBlogLog. It is a yahoo’s social bookmarking site. They have nice widget which show the latest visitor’s avatar on your blog. I was inspired by that widget and I made Recent Gravatar wordpress plugin.
Maybe it’s quite different with myBlogLog’s. It will display your recent commentator’s avatar. You can manage the widget through Appereance>Widget settings. It works fine just like wordpress default recent comments widget. So, just replace your Recent Comment with it 
Anyway, if you want to show the original myBlogLog’s avatar, you can have a look on MyBlogLog Avatar WP Plugin.
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How long has this blog been around? I have been searching for this kind of information for the past week and a half.
Janean Hourani
Hi, really a fine blog. I think it is really a great topic to write about on my blog.
nani
Great post. YOu make it seem so easy to share your experiences. I wish I could do as well in sharing on my blog.