Is it illegal

To force people to have seizures on epilepsy support forums by posting animated gifs that flash?

It's absolutely illegal and 7chan has already claimed their fame to doing something of the sort. These things bother me, I mean moot/m00t/whatever the hell else people address him by said it himself; these pointless DDoS raids or Invasions of the such are funny, and harmless. But Mr. Internetz Tough-Guy posting something like "I haTe ThiZ Faq, tEar 'Em uP!" followed by a myspace link on /b/ is retarded. Anonymous has "torn up" the idiot posters numerous times - which I approve of. Just saying; hope you aren't planning anything.