The company said in a filing with the Securities and Exchange Commission that the inadvertent statements were added to a presentation intended for analysts. Among those statements was one that said Google expected ad revenue to grow from "$6 billion this year to $9.5 billion next year."
Google explained in the filing that these estimates were part of an internal report on product strategy from last year.
"These notes were not created for financial planning purposes and should not be regarded as financial guidance," Google wrote in its filing."
A mistake was also made when Google said that "AdSense margins will be squeezed in 2006 and beyond."
That statement "does not reflect Google's current expectations," executives wrote in the SEC filing.
While Google didn't mean to add information on stock-based compensation for employees and directors, the company acknowledged that those numbers were correct. It said that a stock-based compensation charge of $342 million granted prior to 2006 is a "materially accurate reflection of Google's current expectations."
Google slipped up twice last week when it released information not intended for the public. The company also unwittingly released plans to offer online storage to users.
Last month, Dellspecifications for the Dell Inspiron e1405, as well as other unannounced Dell computers and products, to briefly be exposed by Google's search engine. The spreadsheet was removed from a Dell FTP site and from Google's cache.