That's absolutely spot on! Thanks for bringing that argument up. There's a fine line between aesthetically pleasing but functional and artistically inclined and obscure when it comes to this, and it should really be up to the users' preferences. E.g. GMail got it right from the start: let the user choose their way of doing things. If the user wants 100 rows per screen or 10 rows per screen, who are you to deny the user? :)