I love griefing. People seem to think of griefing as breaking blocks for fun. That's the basics of it. Honestly, if you think it's fun to go around and break peoples blocks then get banned, stop griefing. People start griefing because they see aVo do it and they are like "ULUL I CANN DO DAT" then they download epsilon and break somebodies dirt house. Then they upload videos of it thinking they will get views and become E-famous. That type of griefing is useless and utterly boring. But, if I see someone come into the server I'm admin on, have five of their friends join through the course of a day, then end up mind fucking the admins and destroying the server, then I applause them for it. If you can make your own client, mind fuck a server, then completely destroy it, you are win. That's the type of griefing that is fun and people will actually watch on youtube.
TL;DR I only agree with smart griefing. Breaking someones dirt house is just idiotic and time wasting.
Edit: Damn straight pocketlint