Use Adsense on Tier 1 and/or 2 Web 2.0 sites?

Most web 2.0 sites have an option to enter your own adsense code. seems like it would make sense for you to profit on ads as opposed to them, however I can see it being abused more too. Thoughts?

And increase your footprint 10-fold by having a buncha' (supposedly) unrelated Web 2.0s have the same Adsense?

If you are not linking to your money site, I don't see a problem with using adsense on them.

You still need quality content though and not the usual content for building links.

However if you are using these web 2.0 sites to link to your money site, then i would suggest using another account for adsense instead.

Otherwise as moeatwa has said, it is a big-big footprint.