Hi!
I used to be a big fan of the Settlers, and recently decided to try that version. After some discussion with an in-game moderator (MOD_Gazza35) we came to the conclusion that the following service would be cool to have:
A service that notifies you (email or twitter) when the gems go on sale!
If I get more than 20 people saying that I should do it, I will.
Let me know!
NB: That service will be removed once the people behind this game setup the same thing.