Can the US Government TAX my Second Life Profits?

Chris Tomlinson's views on: http://www.webxpress.com/tomlinson-view/371
are worth noting for anyone having a SecondLife account!

In particular, as you start filing your taxes:
Recently, the US government noticed people were making a good living out
of Second Life trading and decreed that US citizens should pay tax on any profits.

Chris, or any expert out there - PLEASE let us know if this is true!
My tax-advisor doesn't know if the US Government has indeed passed any
laws to levy taxes on any profits made by trading on Second Life !

Related question for experts out there:
I am dead serious about my online privacy protection.

With my 10minutemail (http://www.10minutemail.com/10MinuteMail/index.html)
and Craigsnumber (http://www.craigsnumber.com), I have everything I
need to keep complete anonymity - or so I thought ... till I read this:

Is Linden Labs governed by US Government laws to disclose my identity,
online activities on Second Life - AND any profits I have made through my
second life personae??

Just when I thought the internet could indeed give me a 'second life' !! :-(