This site is cool. It aggregates all the top ppc news/media/twitters in one place. I think it may be better than affbuzz because the site posts feeding advertAgg contain more info. The articles are more technical and contain techy/howto content, not what an affiliate just bought. Good info
RSS stands for "Really Simply Syndication". It's a standard feature of most blogs. It allows readers and other sites to stay up to date on new blog posts using a RSS reader, like Google Reader, or in this case, a script. This webmaster has either purchased or written a script that "reads" (aka parses) these feeds and presents them on a website. If you want the background of RSS feeds, check out the wikipedia article on it http://en.wikipedia.org/wiki/RSS
slow loading which means it doesn't syndicate stuff properly but most likely fetches them realtime (or has slow server). doesn't sound good to me