The adverts you see are tailored to your browsing history. The cookies on your system are responsible.
If you don't wish to see more, add an ad blocker program to your browser. There's plenty of free ones out there. They make internet surfing far more pleasurable. I'm using AdblockPlus with this Chrome browser. The stats for the ads it has blocked on this page and for the past six months everywhere else are below.
This website:
www.ccmb.co.uk
This page:
/showthread.php?455975-Ads-at-the-top-of-the-page
NUMBER OF ITEMS BLOCKED
on this page
8
in total
223,995