I'm interested in dealing with Bitcoins, and I read that in the U.S. Bitcoin transactions are subjected to capital gains tax and mining is subjected to income tax. I was wondering if these taxes are actually paid when dealing with Bitcoins or is it just for show and not actually being enforced?
Yes taxes on Bitcoin as capital gain and mining as income tax is real and needs to be paid unless you'd like to end up in jail over here. As far as it being enforced, the IRS may not have that many tools as of yet, but as time passes they will get better at enforcement and will be sure to tax you up the @$$ for any coins you haven't claimed.
I'm sure there are people evading taxes on bitcoin right now, but that obviously is not advised.