If you're a RSS user who hates getting newsletters in your email, Kill the Newsletter is a simple little service that will kick those newsletters over to an RSS feed, so you can peruse them at your leisure.
Newsletters aren't all bad, but getting them in your email can be a bit disruptive. RSS is a good place for them because you're used to a seeing lot of content in that kind of feed and you can look back on it whenever you want. Kill the Newsletter creates a fake email address for you, then creates a RSS feed for any newsletter you send to that email address. It's a system that's super easy to use, and that works really well for anyone still holding onto RSS.