static Avatar SiteThumb(string email, Uri website, string description, int width, int height)
{
// http://www.robothumb.com/src/?url={0}
// http://api.thumbalizr.com/?url={0}
var api = BlogSettings.Instance.ThumbnailServiceApi;
if(string.IsNullOrEmpty(api) || !api.Contains("{0}"))
return DefaultImage(description, width, height);
var url = new Uri(string.Format(api, HttpUtility.UrlEncode(website.ToString())));
var imageTag = string.Format(CultureInfo.InvariantCulture,
"<img class=\"thumb\" src=\"{0}\" alt=\"{1}\" width=\"{2}\" height=\"{3}\" />",
url, email, width, height);
return new Avatar { Url = url, ImageTag = imageTag };
}