Is it currently being taxed in the US?

I think there are some states which tax internet sales within states, ie(Virginia business sells online, a virginia consumer buys from this business, then the state sales tax is required.) but it isn't federally taxed.

That is why I can't see them ever making the exemption permanent,

It is too big of a moneygrab and who knows how much federal revenue would be available should they decide to tap it.

Congress loves to tax, it's only a matter of time,

Probably another midnight session where they pass it late on a Friday night before the end of a session, then hightail it out of town before the news can report it.

There could be a roadblock if they try to tax the internet now, 2011 who knows....