I had a whole thing a while back, when I first started this blog, that I really wanted to be able to post things in categories. But Blogger doesn't have this capability in and of itself, and the hack I found to get around it sounded like a big roundabout pain in the butt. And I'm too cheap to buy Moveable Type, too technologically challenged to try out something open-source, and also too cheap to obtain sufficient web space to operate either of these things.
But, thanks to Rhys Wynne and Rhys Wynne (these are two different guys, trust me), and thanks also to Technorati I'll soon be trying out a new method of categorizing posts on the blog of YA book reviews I contribute to, ReadingYA: Readers' Response. Basically, you tag all your posts with the desired categories (that will be the time-consuming part) using Rhys Wynne's tag generator. Then you go to Technorati and do a search of your blog using the desired search term (i.e., sci-fi). Then you use the URL of that search page for the category Sci-Fi in your list of categories in the sidebar. Not bad.