How frequently do you check Audiogon listings?

I have been lucky in some instances.
I bought a Shure V15 in which I was the 3rd person to look at it at 7AM CST.
For another great deal I was the 368 person a day after the item was posted. (but that item may have been sold to "the more interesting/more really wanting to buy THAT one item ((I was looking for it for a whole year!))
The manner in which the seller chooses the buyer may determine who gets it. Most just take the first offer. some may research the offers and choose the 'preferred' buyer from the list. (I also would choose a later offer made in a reasonable time frame, if they had impeccable goN' credentials, and an interesting style, over a first offer from from an outsider, or one who never posts...)
I look as often as I get an opportunity. That may be as often as three times a day, to as few as once a week.
I do look even when not actively buying, as it is interesting to see what's going on.

habit checking them even if I'm not really looking to buy anything many times every day.

I got you all beat, I keep a listed inventory on a spreadsheet that i keep update by blasting through audiogon every 1.6 nanoseconds.

Once a day.It's like shopping at Big Lots.You never know what you'll find.

i check 3 times a day as im always buying but the best goodies come in the wee early hours,who needs to bunji jump for a rush i get a thrill from opening an email & reading these words.

i accept your offer(WOOOOOOO HOOOOOOOO)

MIKE.