Most powerful guilds

From LSWiki

Basic poll time. I had asked this over the channels last night, and got limited responses. At least here, people should be able to think over their answers and make arguments for their case. This isn't an indication of what guild are in need of dev attention, just something more interactive than the Locations and Landmarks page. if this works out well and has a lot of input, I may end up doing more polls in the future.

Question:

What are the top 10 most powerful and bottom 10 least powerful guilds?