You try your three favorite search engines. We've talked a lot about search engines in previous columns. Let's look at universal forms and meta-searching. If there are two things I am really good at, they are shopping and searching. Searching is like shopping.
Search engines are department stores.
Each has its own large but different inventory. You've learned how to find the hidden treasures. But you don't find every treasure you need at one department store. Gather several large stores together and you have a mall. You park your car once and you explore each store, buying some items from one and others from another.