Google is the biggest search engine on the web. Today!
While it has some good sides, there are also eome problems: the index is full opf spam, so for certain searches you only get junk results.
Another problem is that google is very fast in deleting web pages from their index. Some companies use this to eliminate their opponents. This is bad :-(
There are several other things you can critisize on google. You may watch Google-Watch: