Arresting a man for parodying a local politician on Twitter sounds incredibly stupid. I'm glad the politician in question did the right thing and resigned after that, and if I were the blogger in question, I'd stop being vindictive and make peace with the politician. Hopefully, he can later help pass a law protecting people similar to him from future abuse while remaining on good terms with his target of criticism.
As a citizen and resident of Israel, I should note that something like that seems highly unlikely to happen here. I have been a humorist, writer/blogger and amateur philosopher for a long time, and my site and other sites and mediums where I've blogged features a lot of positively blasphemous stuff (or stuff that was formerly considered blasphemous) including: jokes about the holocaust, a reflection about holocaust denial, racist or nationalist cliches, sexism, sexualism, critiques of local politicians, critiques of a lot of the constitutional foundation of Israel, an in-your-face Illuminaty/Elders of Zion pan-historical conspiracy theory, and many parodies and criticisms of Judaism (including the Old Testament, the Oral Torah and later additions). I left almost no stone unturned.
And almost nothing happened to me except some people who told me I Was being out-of-line (Often truly) or some threats from non-officials, or getting myself removed or banned from some Internet forums. The USA may wish to consider how much of a free country they are compared to other parts of the civilised world. The 2001 bombings made many Americans paranoid and paranoid people are miserable, and miserable people are insecure and unsafe. So if you want to be safe, be happy and don't be afraid. Israel now has much laxer national security, which makes us safer in the long run. And as opposed to popular belief, most of Israel since 1990 was never really a warzone, and certainly isn't now, and I believe that Jews, Palestinians and non-Jews mostly live in peace and even friendship even in the occupied territories. There's still a long way to go for close-to-100% harmony here, but we're much closer than before.
Cheers from Tel Aviv, -- Shlomi Fish (a.k.a "Rindolf").