5 Incredibly Simple, Yet Useful Web Sites

5 Incredibly Simple, Yet Useful Web Sites: "Sometimes (very often, in my case) you’d like a web site or service to cut through the crap and just keep it simple, right? Well, every now and then a service that’s really easy to use ends up in our mailbox, and it’s a shame not to share it. These sites have no extra annoyances that defer from their purpose; it really doesn’t get any simpler than this."