I'd love to have the ability to subscribe to a search, similar to this Google feature: http://www.google.com/alerts

This could greatly increase the value of the MR or CC forums to members. For example, as a AC member in YYC there are realistically very few deals during the year in MR that don't involve a costly leg to get to the start. Similarly, there are very few postings in CC that have to do with Air Canada. As a result, I frequently don't pay much attention to them. However, I am VERY interested in knowing about a post with "YYC" in it in the MR forum, or a post with "Air Canada" in it in CC. If I could get an email alert when such a post occurs I'd know to check it out. Certainly in CC, it would help the OP as well, as it would immediately bring their posts to the attention of members that really want to know about trades involving <Insert program here>.

For MR this is probably possible (though with a delay) by creating a very specific Google alert. But as CC isn't public, that wouldn't work there.