So is yours. That "50ghz ASIC" isn't even going to generate enough BTC to even pay for the power it uses, much less actually make money. So it literally might as well not be there.
Well, the GH/s is currently around 2500000000 GH/s so contributing 50 GH/s you would have a 1 in 50 million chance of mining a bitcoin every 10 minutes. In a little over 951 years you are expected to mine 1 bitcoin.
Something tells me bitcoin isn't going to be a thing in 951 years.