Added a site search

I have realized that this site is becoming ridiculously large. I gave up with having the sleazy ads directly on the site, but now I've added a search bar at the bottom, where I get a cut of their sleazy ads. You can also limit the search just to my site!

ps. I just added the ads back. Now you can choose which ones. I've selected a variety that look good, with no malware. I still can't get ads of things I actually use, but who would want old-man stuff anyway!