Yo!
I just started mining using the USB ASIC's available for sale here from another member...I'm pleased with the performance I'm getting off my raspberry pi miner.
My initial observation:
Seems like the biggest challenge to bitcoin adoption (and thus mining profitability) is the current difficulty in obtaining bitcoins quickly (ie, not by mining)
My personal experience is that to make a purchase from someone who ONLY takes bitcoin, it takes far too long...I'm currently in process of purchasing a bitcoin through coin base...it's been a week and I still don't have my coin...it's "pending" due to the time it takes for money transfer/etc...There's got to be a better way.
Anyway...I'm starting to mine, so perhaps this won't be such an issue moving forward for me, but we need to make it easier for the masses to buy our hard earned coins if we want to see their value grow.
Happy to be here!