You'd be surprised at the number of people who willingly give up their social media accounts, only for immigration officials to find comments in support of terror attacks in the Middle East.
It's pretty easy to think it's harmless if you live in a country where that viewpoint is not uncommon.
That's not surprising at all, but I think the people who could get caught by the justpaste.it thing are not the same people casually praising Hamas on Instagram.
If you're putting terrorism related content on justpaste.it, you're probably pretty deep into the whole thing.
It's pretty easy to think it's harmless if you live in a country where that viewpoint is not uncommon.