* Ten spam links in the blogroll means that I should upgrade this Wordpress installation more frequently.
* WordPress now support tags. I used to use categories as tags. I’ll probably keep doing that.
UPDATE: just read on this post that if you use “tag” instead of “category” as the base word in the url of category pages (like I do here), you should use a different word as the base for urls of tag pages (you can change this on WP administration, under Options -> Permalinks). If you don’t do this, all /tag/* pages will generate a 404 error.
* I heard about wp-cache when I moved all my sites to Dreamhost, but never started using it. Last week I was trying to speed up the sites and realized that wp-cache is actually very good. Dreamhost isn’t the most fast server in the world (sometimes it’s the opposite), but caching WordPress just made the pages load VERY faster than usual and didn’t cause any problems as I was thinking it would.