This site has been around for about 6 months now, but it just crossed my desk last week.
Like Instapaper, ReadItlater, SendToReader, and several other apps, Kindlebility lets you clip web content and send it to your Kindle. It works a lot like the others, but it does have a point in its favor. It doesn’t require a log-in or any identifying info. But you will need to provide your Kindle’s email address and then use the bookmarklet to grab a webpage.
I know that I’ve probably found a half dozen apps with very similar features. This is good. One or more of the smaller apps might break or pull back on services (cost). It’s good to have backups.