text: On Google's Horizon ... Microsoft (washingtonpost.com) washingtonpost.com - Careful followers of search-engine giant Google surely took note this morning of reports that the company is reiterating an earlier warning that its future growth could fall below expectations.  As the BBC News reported, the company "has warned that fiercer competition is set to hit sales growth. The firm, which had a successful share flotation earlier this year, said its rate of growth from the second quarter to the third may not be sustainable."