Alright people:
I tried counted these little fuckers the first time and so i figured i tried to help you all out.
If you follow indy's clues a half a dozen people are within 3 tabs with the following numbers already choosen:
682,658,675,657,650,635,666,670,661,685 (apparently my 670 tabs +/- 20 tabs doesn't count as a valid guess considering it includes every number from 650 to 690 tabs, lol)
Like i said i tried counting them and estimating upon height of the tabs and they way they are laying how many are there i came up with 670 originally. The correct number is probably 667 or 673, but the range you should most likely be in is 650-680 range if you want to guess close. remember look at the numbers that have already been choosen above and post up a guess.