After one month of meassuring I made an export with the Generate Your Individual-Level Data Export (CSV Format) option. What I've noticed is that many of our newsletter readers have opened our newsletter many times. Not 3 of 4 times... no I have seen reports of several users who have 'opened' the newsletter over 50 times! I cannot imagine someone doing this :-).
So, my question is... how waterproof are these reports? Or what does it mean when it says that an user has opened our newsletter so many times. Some technical issue or ... ?

Interested to hear other Litmus users experience with these individual-level data export.