A lot of people just come here to browse - and that you need a login to browse. I post here on a moderately active basis - but my freebies go to 3DA or to my own spinner pages at northern, so hence, you'd not find much from me here. It's an erroneous assumption that when you're playing with numbers like this that you assume a 100% participation rate on a big site. This will never be the case. 25 % is -extremely- optimistic, and it's probably far below that. If you redo the math and set a variable between 1 and 25 % active participation and extrapolate an average between them, you'd probably be a lot closer to active membership numbers. ~S