Comment on Help me help Google help us

Hey... Check out signature #90 on the petition. You did not write that, did you?
No. I'm signature #2. The other one used my name and my gmail address, which is strange, because it seems like the petition should only allow an email address once, but then again, I don't run it, so I don't know. Anyhow, it's not me, and I'm quite aware that the petition doesn't validate, and of course, that underscores why it's important that Google validates, rather than diminish the point.
What does "Validate" mean by the way? Not the Dictionay definition, the Html one...