Facebook loses 400,000 UK users in a month

Facebook has suffered its first fall in numbers after 17 consecutive months of growth

Facebook has suffered its first drop in numbers in 17 months of successive monthly gains. That's according to online usage research firm Nielson Online, which claims the number one social networking site experienced a 5 per cent drop in unique users between December and January from 8.9m to 8.5m.

Facebook’s biggest rival, MySpace, also experienced a 5 per cent drop during the same period, with a unique monthly user figure of five million. Third-placed and teenage-focused network, Bebo, suffered a 2 per cent drop between December and January, with figures of 4.1 million unique monthly users.