I've been using the plugin for a while now, however I'm suspicious of the accuracy of the Who's Been Online page. It doesn't seem to be recording all the visitors correctly. For example now the new day has just started, it's showing 4 visits (including bots), when my actual stats are showing 14 visitors. The discrepancy is larger on all previous days which have ended with a lot more visitors.
Is there any reason this could be happening?