No one expects Mathematica to be a search engine. However, many people (not just you) expect WA to be a search engine, even though it clearly is not one. It's

No one expects Mathematica to be a search engine. However, many people (not just you) expect WA to be a search engine, even though it clearly is not one. It's a matter of expectation. And it seems likely that creating this expectation is a deliberate ploy on WA's part to create publicity. "Google killer" is a much better media story than "mathematica online". They've designed the front page in a google-style, with a similar text interface, and probably many other ways I haven't noticed.