US Federal regulators have approved Google's acquisition of DoubleClick, but the EU must still rubber-stamp the deal before it can go through.
Google annonced its intention to buy DoubleClick in April this year, but met with stiff oppostion from competitors and privacy groups.
The Federal Trade Commission, however, has ruled that the buy won't give Google a dominant position in the online advertising industry.
On the issues of privacy, however, it included a caveat in its ruling that calls for online privacy guidelines to be drawn up for the whole industry.
The European Commission is set to announce its decision on whether to approve or disallow the acquisition in April 2008.