Users can access personalised news and reviews, as well as answers from qualified experts and entertaining discussions, among other features.
Mansized is continually adding new aspects, such as the "Your News" section, which was added earlier this year to allow users to receive updates on topics that interest them most.
Traffic continues to grow steadily on the site, rising by around 15,000 unique users each month. Its unique users figure for February was 165,000.
Will Callaghan, founder and editor of , said: "We set out to show that there's more to men's lifestyle publishing than wall-to-wall babes and it's heartening to know we were right.
"Revenues are up, traffic's up and we're looking forward to our third year in business."
To celebrate its birthday, Mansized is giving away numerous prizes, including a sporting holiday in Turkey, free cinema for a year, a PS3 and iPod Touch.