I'm for matchmaking as much as the next person - the world definitely needs more happy people. I'm even for advertising dating sites on the content network, just possibly looking at the context of where you're targeting before you let loose on an unsuspecting population.
I was looking for an iCrossing report on paid and natural search synergy (very interesting, if you're looking - the report from 2007 is here). This is where Scribd's AdSense gets a bit interesting:
How the first ad passed through editorial is que$tionable, but how a search report on paid and natural search synergy manages to trigger a Tamil LifePartner ad is a big headscratcher. Perhaps somewhere in the myriad keywords there's a "partner" or "synergy" insertion, but this is the big reason why people don't trust the content network fully for a professional marketing campaign.
Sure, it's up to the individual site owner and the person targeting the content network to make site exceptions, but you can't guarantee anything because the content network is blind. Site targeting has improved the way you can make sure you're targeting the right audience, but Google's content network as it stands is pretty shoddy.
To the folks at BharatMatrimony.com, maybe map out your ideal audience and switch to site targeting - free advice to get a much better return on investment. To the people at Visman, please try to hire a copywriter who speaks English.