We started this section for competitions that could be found on Twitter and Facebook but have since set up specific categories for them. However, comps can also be found on MySpace and Bebo and we'll be listing them here as well.
Click on the site names to go directly to the competitions. Follow the page numbers for more competitions.
Win your very own hand made personalised wedding cake topper worth £35 by entering this free prize draw. Either leave a message on Facebook or on Twitter to enter the competition. Closes: 31st March 2010
Every week for the next six weeks Burger King will be uploading six new T-shirts (until 22nd March), and they need you to vote on them. Tell them whether it's King Great or King Awful. You could win yourself a tshirt by taking part. Thanks to SBrunette. Closes: 22nd March 2010
Surf Girl want to hear your comments on their website! Leave your feedback and you will be entered into the prize draw to win a fabulous Animal Watch from their new winter range! Thanks to raymond53. Closes: Unknown
Help Connected The Book to demonstrate how easy it is to form a social network online by becoming a friend of their profile and refer friends to it. There's a £50 Amazon voucher on offer. One entry per person. Closes: 31st March 2010
Connected Book are giving you the chance to win a pair of top-price theatre tickets for the London Old Vic. Answer the question and send in your details to enter the prize draw. One entry per person. Closes: 31st March 2010
DK.com are giving you the chance to win one of five pairs of tickets to the London or Birmingham Destinations Travel Show! To enter this one you need a Facebook account and leave a comment after their competition post. Closes: Unknown
The John Greed Facebook page are giving you the chance to win £500, £250 or £100 of Pandora jewellery! To enter, tell them about your most 'Unforgettable Romantic Moment'! Thanks to 1in. Closes: Unknown
By being a member of the Seatwave Facebook group, you will automatically be entered into a monthly £100 prize draw for a Seatwave voucher! The winner will be chosen at random on the first day of every month. Closes: 31nd March 2010
The PibeSolutions Facebook page are giving you the chance to win £250 cash! To enter, send in your best "Bed Jump" photo and the picture that has the most likes will win £250 cash! Closes: Unknown
Getting Personal are giving away a fantastic prize each month to one lucky fan, including a personalised calendar, notebook and mug! Become a fan on Facebook to enter - all fans will be automatically entered into the draw. Follow the Facebook link for details. Closes: 31st March 2010
Follow Headline Publishing on Twitter and follow their weekly guest speakers for the chance to grab those exclusive Twitter prizes! You need to have a Twitter to enter this one. Closes: Unknown
If you have a Facebook account, become a Fan of Magners pear cider and you could win lots of different prizes in various competitions! Currently up for grabs are London VIP comedy tickets! Keep an eye on them as they open and close quickly. Closes: Unknown
Mumsnet are giving you the chance to win a private screening of Nanny McPhee and the Big Bang for you and your friends, a Silentnight My First Bed and more in 4 different competitions! Check the entry method to each, as are all different. Closes: 7th April 2010
On the Beach are giving you the chance to win a £750 voucher and £250 voucher. Go to their Facebook fan page and click on the tab that says "25000 Fans Draw" and register your details there to be placed into the prize draw. They will draw the winners when we get to 25,000 fans. Closes: Unknown
The TP Toys Facebook page are giving you the chance to win a TP Goal up for grabs in this months Facebook Competition! Become a Fan of TP Toys, then enter your details for the chance to win. Closes: Unknown
The Devil You Know are giving you the chance to win one of three £25 Figleaves lingerie gift cards! There are a three ways to take part in this competition, each one giving you more chances of winning. Take part in all three ways to have 6 entries! Closes: 31st March 2010
Tracey & Matt are giving you the chance to win a Sony Ericsson Xperia X2 in another great competition. All you have to do is be registered, send a tweet or join them on Facebook to enter the prize draw. Closes: 31st March 2010
Join the Transworld Books What Shall I Read This Month…? Facebook group for the chance to win one of 40 free books each month! You need to have a Facebook account to enter this one. Closes: 31st March 2010