Belgiumview traces which pages you visit on Belgiumview. We only use this info for ourselves, and don't use it to contact you. Belgiumview also shows Google Ad's. Google Ad's offers 'interest based' publicity to the advertisors. This means that, based on the interests Google assumes you have, they will show banners with subjects in that area. To 'derive' your interests, the follow up which pages you visit in their network. So if you visited quite some sport pages, they assume you are interested in sports...
Click here to se what Google says about it.