[MicroBob]

nineinchal evidently shouldn't play in Tunica.

The straddling there can get pretty crazy and you can straddle from any non-blind position. Straddling UTG and on the button are the most common.
Some players will straddle for practically every hand of an orbit....and then keep on doing it.
I've found it has pretty much the opposite effect of 'tightening' up the table. Makes others play looser because they want to take on the crazy guy who doesn't even know what he has yet. Good times...big pots. I always root for a crazy player or three to get in some straddling wars.
If I happen to be on a table where nobody is straddling then that pretty much means there isn't much life or action to it.