NGravatar provides MVC HtmlHelper and UrlHelper extension methods for rendering Gravatar avatars from gravatar.com. The project is licensed under the MIT open-source license and is hosted at Google Code. See http://code.google.com/p/ngravatar/ for more information.
Gravatar avatars are retrieved based on an email address and optional parameters. A rendered Gravatar avatar on an MVC view page might look something like:
@Html.Gravatar("ngravatar@kendoll.net", 80, htmlAttributes: new { style = "border:10px solid blue;" })
The above line would render an <img> tag with the source of the Gravatar for "ngravatar@kendoll.net". The size, default image, rating, and any additional HTML attributes can also be specified.
Using NGravatar requires that the "NGravatar.Html" namespace be added to the Web.config (or the top of a view with a @using directive). See the source at Google Code for an example project.