Great advise Maurice I am very glad you decided to join this community!

That is exactly what talkfreelance.com is doing, we have 2 banners created both targeting different markets (designers and customers). They both advertise "free" things that we offer and are being advertised on high traffic specalised websites.

On one site we have purchased 250,000 impressions on a fixed position at the top of the website. On the other site we have a banner in a fixed position on the index page and have 200,000 impressions.

We are also in the process of getting a banner on designoutpost.com for a month as well as a sticky thread on dnforum.com which recieves a large amount of visitors.