To get up here you turn pathfinder on. the little green arrow on the bottom but dont use the arrow keys to move or it goes off. then just click up and you should be able to get on here. it might be difficult if there is a lot of people up there.
another thing i learned today
in the chat if you type
"Go to hell" you literally teleport to hell
"I'm in heaven" you go to heaven if you haven't been banned in the last 6 months