I'm sorry Chaim! I don't think it would help your case if I put my name down...
Why are you sorry to Chaim? If this is something you care about, do it. If you're afraid for whatever reason, don't. This is probably the biggest protest activity I've seen on JTF, so it's a way to bring people together. I am not expecting that this petition will change all of Israel and bring red carpets for Chaim's arrival in Tel Aviv in a week. It gets JTF known, brings people together, and the cause might bring others here.
It's also a good cause, so sure I hope everyone signs it and it works, poor guy and everything, Israel is awesome and I can imagine how I would feel if someone told me I could never go back, I'd kiss the feet of anyone saying a word for it, but maybe even this just gives false hope, so it's not necessarily only for Chaim, and may cause emotional pain. It's for JTF, and anything that could come from it, whether it be Chaim landing in Israel, or one guy seeing it and telling someone about the forum, should be positive.