RSS Update
If you just got a ton of my old posts showing up in your RSS reader then I apologise. You might have already seen that images haven't shown up in my previous post in the RSS feed and I was trying to fix that. While fixing the image issue I noticed some out of date and just plain wrong items in my rss generation configuration and fixing them involved changing all the guid's for my rss feed. Doing that might have triggered RSS feed readers to see all my previous posts as unread. Again, apologies for that. Hopefully I won't have to do that again.
On the other hand, if you have no idea what RSS is and how you would use it then check this out, and if you'd like a good RSS feed reader then check out NetNewsWire.