Nope.
Depends on the area. They don't offer service everywhere, but yes, they do "sub" the work out. They even offer to sell you a wireless security system you can "install yourself" (or have one of the guys they "sub" to do it for you).
Nope. They're not licensed in California as *anything* from what I can gather. I don't even think they have a physical address.
Heh... It does look "fishy"...
Yep... ;-)