Since the beginning of the year and until now, Google has launched all sorts of new services and in the last three months, the search engine announced something new almost every two weeks. New features for the search engine, new local services, new software for the desktop searches or price cutoffs for the hardware components sold by Google, all these in such a short time. Although some services are only beta, you shouldn't think that Google will ever give up on these services, beta meaning the project can still be added significant improvements.
And according to the statements of the company founders, Google's expansion is far from over. In February, Brin commented that although in the last two years 2,300 persons have been hired, the number is still small compared to the expansion plans of the management. So, despite the company's profits increasing six times (and notice that we are talking about profits, not turnover), it's obvious Google has more aces up its sleeve which will be gambled at the right time.