People often ask me about bidding strategies for placement targeting. I’m working on an interesting placement targeting experiment right now related to bidding and my results are so unusual that I thought I would share them.

• I copied the same AdGroup containing about a dozen individual placements into seven separate AdGroups.
• Each AdGroup has a different CPM bid starting at .50 then going up in $1 increments (.50, 1.50, 2.50, etc.)

I just checked my results for today and I have impressions showing in the 3.50, 5.50 and 6.50 AdGroups. Sometimes its on the same placement. Sometimes its on different placements.

What’s missing? I still don’t have URL data. It should be interesting to see if the bids are playing a role in what pages my ads are being shown on.

Take-away from this CPM variable bid test: Bumping up your bid may not give you more impressions because my impressions today were equally distributed between the three different AdGroups with three different bids.