I'm scared about entering a key on his web based thinger
I wouldn't be - Kalphiter offers the same page with the only difference being that he doesn't use SSL to secure it which is hardly safe at all.
from the looks of it i feel like i have more control with kalph's service
How? As far as I know all you can do with Kalphiter's service is remote start/stop, ftp access, remote console and that's it? Clearly this offers all of that and then more on top of it.