PSAs mixed w/ regular ads

Saw first one just now

[Clark]

Just saw some charity ads as filler with regular ads. I don't remember seeing this before. Anyone else notice it?

[ken_b]

That's been around for a while now. But they may be paying ads run by charities.

[richmondsteve]

I posted about it in the following thread back in March.

PSAs mixed in with Adwords advertisers [webmasterworld.com]