A lot of websites put a copyright mark here and say all rights reserved. Here's the deal. Copyrighting a website is more work than you'd think, and I would be willing to bet that 99% of the blogs you visit that have the little copyright mark didn't go through the steps. I'm not going to either, but I'm not going to fake it. Plus, it's a global economy on the internet... you think me copyrighting this with the US is going to stop someone outside the US from ripping off my website in a different language and calling it their own? It's not worth my time nor the US Copyright Office's.
If you're going to use stuff on this site for your own financial gain, or you find value in the content, at least buy me a beer first!