I ran a Pretty Link through Bitly and posted it to Twitter only. The counts are quite different. Bitly says the link received 11 hits, while Pretty Link counted 43. Pretty Link's stats say the same IP addresses clicked the link 10+ times, which appears to be a bot. Why are these counted as unique clicks, even though they occurred within seconds of each other by the same iP? Is there a way to avoid this? Would checking "nofollow" reduce this error? Any tips would be helpful. Thanks!