there's 2 ways to look at this. giving your surfers 4 - 5 pics per blog may cause more of them to bookmark your site and come back regularly. giving your surfers less may cause them to want more and go away, hopefully to where you want them to go.

still, even if you only give them 1 - 3 pics per blog, if you have 250 blogs there is still plenty to keep 'em looking...

when i did galleries, i did better with 15 pics than 20, but always made better sales with hardcore than non nude.