Tried out the service with coin 1337 and have receive a POS stake transaction. 

Some feedback...
- Initially, the transfer of STEPS coins to my "wallet" is confusing.  I created a RECEIVE address, but that is apparently not my "wallet".  The "wallet" is under the account menu and I had to send from RECEIVE address to wallet address.  Very confusing when trying to setup\buy a POS wallet.
- I mistyped my password too many times and it froze account for a while.  This is great.  Please send email when this occurs too.

Questions:
- For how long will my POS account (that I bought for 250 STEPS) be active?  ..Pretty cheap hosting if for a long time..
- What would stop STEPS devs from running away with my POS coins?   I would guess this is like trusting coins in an exchange.