I just came across this about Friends Reunited web site for £120 million on informitv, not bad considering it was a established from their back room :)

ITV acquires Friends web site for 120 million pounds
ITV, the UK commercial television company, has acquired the Friends Reunited web site from its founders for £120 million in cash and shares.

Friends Reunited, a web site that links people through their former schools, colleges and employers, was originally established by Steve and Julie Pankhurst from the spare bedroom of their suburban semi in north London.

The company expects to turnover £12 million in the year 2005, with earnings of £6 million before tax.