While this module is a definite improvement over the "stock" most read module it has one glaring weakness.
If you set to the last N days, where N is say 60. Any articles published 61+ days ago are excluded EVEN if they are STILL the most read articles.
A really old article could still be read the most because it receives a lot of organic traffic from search engines and other sites.
To ignore this fact is not good.
The problem is the database would have to store each contentID number of hits by day for the last N days (60 in this case) and then do a query to retrieve the top X articles that have the most hits over the last N days.
More complicated to write and I can understand why the author did not do it.
Maybe a nice hack on this is where I will head to next.