Late to the party as always, but CA, has this issue been resolved to your tastes?

Currently I see ads for protolabs (I have dealt with them a couple times), cubibot printer, some mobile workbench thing (I was looking up workstations for my operators the other day), a 3dprinting conference, asimov ventures, which is a 3dprinting startup investor, amazon.com (showing some electrical transformers I was looking at last week), another protolabs one, and one clickbait ad showing "4 foods to never eat".

So it seems like all but one ad is targeted.

I ask because I am curious to know how well the administrators of these pages respond to their user's input.