Page last updated at 14:13 GMT, Wednesday, 4 February 2009

'Facebook changed my life'

Facebook, the online social networking site, has reached its fifth birthday. Founded in 2004 by a Harvard University student, the site now has 150 million active users.

Here, three BBC News website readers explain how social networking has impacted upon their lives.

LYNNE ACKERS, 54, MERSEYSIDE, UK

Lynne Acker