I'm not sure if I get the problem... as long as the number of accounts doesn't kill the board software (in which case I'm sure the Renderosity tech staff will delete all "unnecessary" accounts immediately anyway :-) I can't think of a reason why anyone should be blocked simply for "inactivity".

As a matter of fact, Renderosity is a huge place with a clear commercial aim and focus (this has been stated and discussed for good and for worse many times). Renderosity wants as many members as possible (because they are all potential customers for their marketplace), and those of us who make announcements about our own activities are here for exactly the same reason... 1000s and 1000s of listeners! And even if I only ask something then it doesn't hurt to have a lot of reading people either.

If anyone doesn't like to share posts with people who only read and never write then there are many smaller "activists talk with activists" places.