Why i should choose announcement networks?
Answers: Well, that is the individual way to monitize your website next to as little effort on your fragment as possible. Ad networks can provide "MANY" different advertisers to keep a constant stream of revenue coming. It can be not easy to get advertisers on your own. Below are a few advert networks I've used and been successfully remunerated.
http://www.G00GLE.com/a.d.s.e.n.s.e
http://www.valueclickmedia.com
http://www.realtechnetwork.com
http://www.cpxinteractive.com
http://www.cj.com