Matthew Cross (@crossy) has won Speed’s weekly quiz. He correctly identified that Social Media Week kicks off today with events taking place around the world. Matthew wins a box of delicious mini cupcakes!

Follow @speedcomms and every Friday at midday we’ll tweet a question. To take part simply send an @ reply with your answer. The winner will be randomly chosen at the end of the day and will be announced on the Speed Blogs and on Twitter on the following Monday morning.

Click here to find out a bit more about our weekly competition.