I am starting a website and would like any comments about good banner advertising networks. I have valueclick in mind right now. The problem is that they only offer the standerd banner size. Does anyone know of any advertising networks that offer 125x125 or simular banner ads. I see then on some pages but have now found any network that offers them yet.
Since you're just starting out, you probably aren't ready for something like Burst! Media or Flycast.
Take a look at http://www.advertising.com
advertising.com requires 60,000 monthly impressions last I looked, thats 12x the amount of burst