Just for reference - petitiononline.com sucks hind tit.
It's virtually useless, and nobody in any kind of position to do anything about it ever reads it.
I think petitions are useful tools, but not from that site.
Names, without valid addresses don't really do too much.
(Literacy, on the other hand, and proper grammar/sentence structure, along with punctuation and proper capitalization help, also.)
Don't mean to burst anyone's bubble, but online petitions blow.