One of the ways you can be a more efficient developer, is to write less stupid code. If you have to edit App.Config or Web.Config (or other XML/HTML files) frequently, you know what I mean. You have to comment keys in and out, by using the <!-- and --> tags, which, let's say, is totally and utterly unnatural.

So, to that end, we present a really simple VS.NET Add-in. It comments and uncomments XML/HTML code. Just highlight some code, then select Tools/HTML Commenter. It's that simple. See the video for pure simplicity.