I absolutely hate the Search Engine Watch (main site) RSS feed. It is the most annoying feed on my RSS feeds list. It updates several times a day on Bloglines, even when the main site only has one new article per day. Note, this is just the main site's feed and not the blog feed, which is powered by MovableType and FeedBurner.

Please SEW, please Stop Updating Your Posts Please! Especially when nothing has changed!

There have been feeds that I have unsubscribed from in the past because of this.