More than two in five (45 percent) men use the internet to watch porn, says WinMonkey.

Research by the competition website revealed that of those that watch porn online, 87 percent immediately erase their browsing history, while only a third would publicly admit to it.

According to WinMonkey 65 percent of men said they spent most of their time online playing games, while 62 percent said social networks including Facebook dominated their surfing time and 55 percent claimed their time on the web was spent watching funny videos on sites such as YouTube.

Furthermore 36 percent of men admitted they spend more time online than in the pub or with their friends. This is up on the 26 percent that said the same thing last year.

Of the men that preferred surfing the net to going to the pub, 47 percent said that it was better for saving money, while 20 percent said that they liked not having to speak to a real person.

Sam Notaro from WinMonkey said: "We have had a huge rise in the number of visitors to the site, so it's hardly surprising that men spend the majority of their time online playing games. Even a third of men who go on social networking sites like Facebook do so for the games".

See also: 20% of women dump partner for gaming habits