I had the same idea - you should do it! There are some fantastic blogs out there with amazing content that are totally overwhelming because you're coming at it

I had the same idea - you should do it! There are some fantastic blogs out there with amazing content that are totally overwhelming because you're coming at it after years of writing, so if you could rewind the RSS (great way of describing it by the way), that would be really fantastic. Don't worry about tags so much, but you need the dates, because your user should be able to play back the RSS at a speed greater than the speed the posts were actually written (so that they have a hope of catching up one day). If you need to do it from the html, you could use something like beautiful soup - it would be able to gather the date, I'm sure.