Urge for money... rising

Just noticed that Google wants to run ads on blogs. Like this one. (Okay, maybe not like this one—maybe one that's actually popular...). Funny how my mild annoyance with ads a surfer doesn't stop me from being awfully tempted to try to sign up. But considering that this is supposed to be an academic / scientific site, with the goal of letting people know about the various stresses of running a scientific research lab, having "Buy this beaker" on the site seems contrary to my stated goals. Even if the ads are somehow related to whatever it is I'm writing here.