Thanks. Quickly glanced over this page (I wasn't aware of this option, I admit) but can anyone tell me if the conversion pixel is just a tracker for conversion, or whether it actually affects ad serving? I know on google it does.

Anecdote: once had a Google advert that resulted in many more clicks, but another advert was served more. When I inquired about this, google staff explained that the other advert had fewer clicks, but resulted in more (or actual) revenue. I did not have to manually track the results of the campaign and adjust, it was adjusted for me.