After reloading my website, I failed to re-enable WP’s permalinks, opting instead for the default \?=<article number> links that it gives. Benefit of this being that they tend to be far shorter than the permalinks I used previously.
This had two unforeseen problems. Firstly, all the the links to my articles, on my own site and others, would no longer work. This I noticed immediately, and had corrected some of the more recent articles of mine.
Secondly, and I only found this out now, is it appeared to have destroyed my RSS/Atom feeds. For some reason this is affected by permalinks. In any case, I’ve switched permalinks back on, and now I’m going back through my articles and updating them again.
For those interested, you can get more info on WP’s Feeds here.