Depending on your intended output target, the jQuery plugin Timeago may be a better option.
Here's an HtmlHelper to create an
element containing an ISO 8601 timestamp:
public static MvcHtmlString Timeago(this HtmlHelper helper, DateTime dateTime) {
var tag = new TagBuilder("abbr");
tag.AddCssClass("timeago");
tag.Attributes.Add("title", dateTime.ToString("s") + "Z");
tag.SetInnerText(dateTime.ToString());
return MvcHtmlString.Create(tag.ToString());
}
Combine the above helper's output with the following JavaScript somewhere on your page and you'll be in the money.
jQuery(document).ready(function() {
jQuery("abbr.timeago").timeago();
});