Forum Moderators: martinibuster
There are as many opinions on placement, and formats, as their are publishers.
Start with where they fit most easily on your page before making any drastic redesigns, and work from there making changes as you go along if you are not happy with the results.
It's hard for others to say where on your pages is best.
I have redesignned some pages to accomodate different placements several times. So far I've always ended up going back to my original page design.
Apparently I got it pretty close to right the first time around. Unfortunately, that makes my pages look like junk, in my opinion, but it seems to work for my visitors. :)
Best to find an appropriate position within your current table.