I am quite new, and play at 1-2 cent NL tables. MAX buy-in is $2 and any in-game re-buy can only take you back to $2 MAX, just so you know where I'm coming from.
I am amazed at the number of players who let their stacks get to $1 or even less. They don't have the stack to capitalize on a big hand even if they do get one.
When I get to $1.50, I re-buy to $2.
Do players at higher stakes (it doesn't get any lower than 1-2 cent) let themselves get so short-stacked when all they need to do is buy more between hands? We're talkin' pennies here!
Do you use this as an indicator of a generally weak player when you first sit-in (before you get a more-informed read on him/her)? Does this initial assessment usually bear-out?