You using a solo usb will never see a block, statistically.  You need to join a pool.

Hypnagog

This would require a decentralized usb-mining pool.  That way users get some revenue and the hash can be aggregated to all users

I have been mining with USB ASIC (100GH/s solo) for four years, but I haven't mined anything.

In theory, mining depends on luck, but in reality it depends on hashrate(capital).

I'm still testing it, and if I can get bitcoins, maybe it's not unrealistic to use USB ASIC mining for decentralization purposes. I haven't got any bitcoin yet though, so I don't think it's realistic either.

bitcoin

Will bitcoin mining become impossible for the average person? 

cristaiji

I have been mining with USB ASIC (100GH/s solo) for four years, but I haven't mined anything. 

In theory, mining depends on luck, but in reality it depends on hashrate(capital).

 I'm still testing it, and if I can get bitcoins, maybe it's not unrealistic to use USB ASIC mining for decentralization purposes. I haven't got any bitcoin yet though, so I don't think it's realistic either.
