Hi Eduardo!
I guess it depends on how you measure. 😊 Do you count users, database size, number of acs_objects, number of hits? It really depends on how the system is being used. We've got sites running an OpenACS with over 150,000 users in the database but only 1 million acs_objects. Then we have other sites with only a few hundred users but with a few 100,000 new acs_objects being created daily. (I'd have to check exact numbers - these are only rough guesses). I have no idea on our numbers of hits.
hope this helps,
Brian
