PolyCola, developed by the same guy who came up with GahooYoogle.com, searches across multiple search engines at once. It’s a fairly simple, yet practical concept. Most people across the world use Google or Yahoo to perform searches, however with PolyCola, you can search two engines simultaneously. Here’s how it works: say you want to search for dog gifts, type in the term in the search bar, select your engines (you currently have six choices: Google, Yahoo, Ask, Dogpile, Altavista, and AOL), and filter your search by picking web, images, videos, news, shopping or answers, finally hit enter. PolyCola will pull up two screens, one for each engine. You can enlarge the left or right screen to focus in on the results from a certain engine. Alternately you can further refine your search using the filters at the top of the page. PolyCola is free to use.