User blog comment:Leo Verto/Some tips to tekkit server owners/@comment-4483820-20120425130645/@comment-5196483-20120818174120

The problem with blocking some of them, is that they have a purpose outside griefing. For instance, if I want to quickly mine a lot of stuff, I'll take a few nova cataclysms, head down to diamond levels, then explode them. Only problem is that they would be considered griefing in most cases, and then be banned for it. Then, people like me who would be playing on the server would be out of a way to quickly get a lot of mining done.