I use FF extension too, but on average I login once or twice a day to check my earnings, which isn't much, mostly only a few cents lol. Probably I login that "much" because I mainly use Internet Explorer, and not Firefox *edit: people, you can download this FF plugin over here.
Maybe 1 to 3 times per day, sometimes even more whilst on other occasions I won't check it for a few days. Hmm, never tried to plugin though... 0_o
I check my stats so often Google probably spends more for the traffic that I create them than what they earn through me.
Too often to own up to But in all honesty because of the channels its more to get an 'accurate' indication of the up to date visitor stats to my sites. It actually gives me an indication of how my latest updates to my juvenile sites are impacting on my visitor numbers. I can in theory (again only on the 'younger' sites) trial new marketing activities and get reasonably reliable data. New marketing activity = spikes in visitor numbers, I know its working as I wanted. New marketing activity = not much of a change, I know its not working as I wanted. This is not foolproof and can only work for spikes but it gives a reasonable indication of where my marketing is working IN THE SHORT TERM. Well in theory thats what I tell myself to justify all the log-ons
I check mine every 10 mins when im online, when im at my girlfriends I dont check it for a few days because I dont remember my password.
I use the FF extension... I love it. Updates every 15 min. I might log in to Adsense twice a day to check channels etc..
When I used to use it I'd go in every 10-20 Mins depending on where I was lol, it was pretty addictive to keep going and checking.
When I am bored, I tend to check every hour or so. But on an average day (well, an average day consists of being bored, but otherwise), then maybe 4 times a day or so.