Question
The IAB is the only association dedicated to helping online, Interactive broadcasting, email, wireless and Interactive television media companies increase their revenues.
http://www.iab.com/index.asp
They also produce a standards and guidelines page.. (standard banner sizes)
http://www.iab.com/standards/adunits.asp
Answer
I found a FREE little software for Website Link Popularity that might be of use to website webmasters.
And for micro-businesses, FREE is ALWAYS good!