[QUOTE=fried]An unintended consequence to this is that after 30 days, you are liable for income tax to that state and/or city. In most cases the hotels do not report you to the tax authorities, but I've heard of cases where the local cops do a parking lot check every 30 days or so and trace down from the license plates who has been there long enough to be liable for income tax.
QUOTE]

How does this work? Does this mean you have to pay income tax to this state/city in ADDITION to your resident city/state? Or do you only pay to the place you're now staying at? What if you come from a state w/ state income tax and are now staying in a state w/o state income tax, or vice versa??