Just remembered that I've actually did buy a small stake directly, and got into the wallet on:
https://wallet.fimk.fi:7886/The balance pops the following message:
Effective Balance: 0 FIM
I've already set up a nickname to account to enable the public key (for 0.1 FIM), any idea what else is missing?
Wait 1440 blocks from the nickname creation before you can start forging.
Also, is it really safe to send the password seed to this hosted server for forging?
It has considerable risks. We advise using the online wallet for only accounts that have small amounts on them.