>>756
おまえはこれが読めるレベルになってから書き込め中卒のカス。

I'd say "I think it's not true" would be used when you are sure that it's false. And "I don't think it's true" would be more if you just kind of think that it might not be true.

In other words I'd use "I think it's not true" if I'm more confident that it's not true.

おまえのど下手な中卒丸出しの文章は恥ずかしすぎる。

もう書き込むな！！

いいな！！