I believe anybody, individual or company, that uses bitcoins to purchase goods or services from companies/websites that must report under FinCEN (http://www.fincen.gov/), which is pretty much every site imaginable, will invariably have to calculate their bitcoin capital gains/losses.  This is a fact, and there is little doubt that the IRS will eventually send each and every single person that uses bitcoins, a bill for overdue taxes.  I see many people in denial about the ability and/or legitimacy of the IRS's intent to proactively and retroactively pursue taxes for your bitcoin trades, and to date the IRS has been slow to encompass and enforce said taxation, but make no mistake, if you use or have ever used bitcoins on FinCEN-reporting websites, your entire wallet of addresses has been publicly exposed in the blockchain, your identity is known to the IRS, and your tax liability is deterministic, and unless an unlikely amnesty is granted, the IRS may soon send you a bill for bitcoin profits as far back as 2009!  What's more, even if you never convert your bitcoins to fiat currency and just buy and sell stuff with bitcoins, from the perspective of the IRS, this is called 'bartering', and there is an implied conversion to fiat that is taxed in the same way as if you actually converted to cash first.

I entirely sympathize with the interpretation of injustice this taxation represents to most people, especially from the 'new world order' root perspective that bitcoin's popularity originally surged, but let's keep one important thing at the focus: there is nothing the IRS can do to remove the original attributes of anonymity of bitcoin, unless you expose yourself.  Thus, bitcoins have evolved into a dichotomy, 1) the original, underground, and still very present anonymous ungoverned currency, and 2) the evolving taxable, exposed, and legitimized 'property' version of bitcoin (like a stock).  The IRS owns the second, but can't touch the first.  You have full control over which of these two aspects of bitcoin you participate in, therefore, use bitcoins in the manner most appropriate for your needs.  Ultimately though, it's increasingly more likely you'll start to use at least some bitcoins on FinCEN sites, thus, the BFT website will be an essential tool for you.