Then over the years or many months that have gone by 60% of your covered player base has changed their styles.
Actually, thats a good point. After reading this, I started adding the month and year to my notes. Then later if I see a really old one, I know it might not be completly accurate.
And is it worth it? Well styles can change for some player from hand to hand, but some stay the same. I dont think notes can be completely trusted, but any little bit of info you might have on an oponent could be helpfull. There has been times I sat at the same table with someone for two hours in a tourney. Learned a bit about how they play. Why waste that time when you might see them in a day or two?
Another thing I like do is mark those guys that go All IN with anything 1st hand with red. Then if I start a tourney and find myself at a table with 6 red marks, and Im 1st to bet....no limps.
Also I like to mark auto folders with Yellow. Sure that might not be true the next day (or even in an hour) but if the tables get re-arranged a few times, and I see them again in the same tour.... might easy blinds to pick at.
But mostly I think it just gives me something to do when the cards are running cold.