What do you think of private servers?

[djmkills]

So, private servers have their advantages, quicker training, easier money making, less hassle...and their disadvantages, missing skills, non working weapons, downtime now and then.

But what do you think of them? What do you like or dislike about them? What do you prefer about them or Runescape?

On top of that, what's your ideas on SoulScape? Suggestions are always welcome.