I just finished writing some ASP.NET code where I also typed the following lines: 

 <ItemTemplate>
    <asp:Image ID="IsOnline"
    runat="server"
    ImageUrl='<%# GetImageUrl((MembershipUser)Container.DataItem) %>'
    />
</ItemTemplate>
protected string GetImageUrl(MembershipUser user)
{
    if (user.IsLockedOut)
    {
        return "~/images/BadUser.gif";
    }
    else if (!user.IsApproved)
    {
        return "~/images/GreyUser.gif";
    }
    else if (user.IsOnline)
    {
        return "~/images/OnlineUser.gif";
    }
    else
    {
        return "~/images/OfflineUser.gif";
    }
}

Before I shutdown my machine I fetchted Mail and Feeds when i ran accross this posting by ScottGu pointing to Fritz Onions Blog.

;-)