1. We should use GET on the front-page search so that people can bookmark the results and send links to other people. Important. (DONE)
2. The search should offer some sorting options, like "Newest listings first", "Oldest listings first", "By course name", "By publisher name"
3. Each search result should offer an RSS feed, always sorted with the newest courses first. These feeds should be cached for performance (see Andrew's new work).