Experience Banning Made-For-Adsense Sites?

[SilverSiR]

There's a few Made-For-Adsense sites showing up on my Adsense and I was wondering if it's a good idea to ban them. I'm not happy with these sites but my revenue has been steadily increasing so I've tolerated them.

Just wondering if it's better to ban these sites or just leave them be ...

[Tropical Island]

I just banned a bunch of them today.
They add no value to my websites.
My general experience is that they have no effect on lowering my CTR or eCPM although I seem to be a little lower right now than I should be.
Doesn't matter - I would still block them.

[sailorjwd]

leave them (my ads anyway). Bids will likely be higher because of the competition.