I have to agree. This happens on forums as well. I've Google searched something before and found people discussing my problem on some random forum. Maybe I know

I have to agree. This happens on forums as well. I've Google searched something before and found people discussing my problem on some random forum. Maybe I know something that might help, but its a hassle to create an account to post. I bet that happens on Stack Overflow too. People who'll never bother to create an account find a page about a problem through Google and they have something valuable they'd add it if didn't prompt them to sign up first. I wonder how much trouble it'd actually cause spam wise.