Yeah I've been playing it, catch me as Lorenith if you can I guess?
If you find you can't afford the trade rates for crowns>crystal energy and don't want to use real cash to buy some, there are a few ways to help a bit.
Mainly by using less energy, the loot doors are very rarely worth it so don't bother opening them. Be wary of danger rooms, and if able let a friend revive you rather than using energy (as a general rule if you are energy reviving you shouldn't do it more than once or twice, it's more efficient to just lose all your heat and start over).
Just doing that can save you alot of energy, and that is often all the difference between finding enough crowns to trade for 100 more CE to keep playing.
Edit: It's also worth noting that you can't "friend" people as far as I'm aware without being on the same screen as them, it's like that in other OOO games as well. So if you guys all start playing you'll want to set up a meeting area to friend each other.
Edited by cobaltstarfire, 12 April 2011 - 05:52 AM.