Brand Republic reports that Bigmouth Media has merged with a German based SEM company named Global Media creating one of the largest, if not the largest, SEM companies in the world. The company is now reportedly worth £150m, which is about $300m US Dollars (I believe).
The deal, set up by private equity firm Carlyle, makes it the largest independent search marketing company, with over 300 customers, including Hilton, British Airways, AOL and Barclays.
Some more details at e-consultancy.com.