I ran across this story this morning at Americablog. The same group was at the local Safeway with many, many sign in please petitions. The ranked from "No Gay Marriage", to "No Abortion" to voter registration to "Protect Children from Cruelty" to "Stop the Endangered Specie Act" to I don't remember what. There were eight sign in sheets. I know this is where I registered to vote in CA. I signed up to vote and registered to the workers dismay as a Democrat and bandied with him back and forth on the others, asking where the gun control petitions were. Yes, they tried to make me sign in as a Republican, but I refused and then refused the other ones.
There are times you need to read what you sign and know some basic rights.