I don't outsource my tech support as it seems a little iffy like purple was noting on. We do have a good bit of variety though and yes we always try within 15 minutes on the clock to reply with any type of update and clients really appreciate it. Some of us also have a kind of pool of money that when we are late on a reply, we gotta cough up some dough (kind of like when your a kid in a household and have the cookie jar so when you swear you gotta fork over a quarter.......ours are dollar bills though).
