The average UK web users spends 22 hours a month online

"British web users are spending 65% more time online than three years ago, according to a survey of net habits.
The average surfer spends 22 hours and 15 minutes on the net each month, according to the UK Online Measurement company (UKOM).
The lion's share of that time is spent on social networks or blogs, which accounts for nearly a quarter of users' time online.
Instant messaging (IM) has been one of the victims of social network growth.
Three years ago 14% of online time was spent using IM but that has fallen to just 5%.
But e-mail, also predicted to suffer as more people used Facebook and its rivals, is still healthy and accounts for 7.2% of time compared to 6.5% of time three years ago."

Time Spent Online
Social networks/blogs - 22.7%
E-mail - 7.2%
Games - 6.9%
Instant Messaging - 4.9%
Classified/Auctions - 4.7%
Portals - 4%
Search - 4%
Software info/products - 3.4%
News - 2.8%
Adult - 2.7%
Source: UKOM data, reported by BBC News, 19th May 2010