I'll be the first to admit that, even as a developer, I "ooh" and "ahh" over web sites with really clean and usable AJAX implementations. I'm often frustrated that most of the cool AJAX-esque libraries aren't targeted at ASP.NET. In particular, I've come across several sites recently that use an incremental page display pattern to display content after the page is loaded. I know that ASP.NET AJAX and the Control Toolkit have support for calling web services to display HTML output, but I dislike this approach for quite a few reasons (too many for this article).
