I have been purchasing small mining contract on Ebay and the yield per contract seems to be @$1.00 per hour at 180Ghz.
I use BTC Guild as a pool with a PPLNS setting with a Minimum Difficulty of 128Ghz.
Hashrate is in GH/s, and there is no unit for pool difficulty.
Guess my question here is are there better settings/pools I can use. Also if I join up with a "team" will this increase or decrease the potential yield.
The "team" on btcguild will not affect your mining result at all, and it is solely for fun.
You may try other pools that offer merged mining, such as Bitparking.