I read somewhere that Google was not using any kind cookie to track referals if the user doesn't signup immediately. Is this still the case?
not very sure about this. Coz today i got one referral which seems to be an old click coz.. 0 clicks and 1 signups
maybe that guy keep the page open for a day or two? I dont think google will use cookie coz that's mean they need to pay the share revenue to referer. they like to keep all income themselves. (i knew that's sucks, come on big G give us more money!)