That's honestly better than I expected...
I can see how it's an attractive option, especially for members that post frequently anyway.
I wouldn't say the paid signatures increase the likelihood. It makes it so that you degrade the quality of your posts as to farm the signature campaign's money, as opposed to writing larger posts. A lot of people think it's quantity over quality, and most times they can get away with it.
I'm not trying to insult the mods; they do a good job with what they do.
Agreed, no disrespect to management here. I still see a lot of good posts as well (my own was slightly exaggerated).
Just making the case for more of a focus on quality - otherwise the relationship is parasitic rather than mutualistic.