Actually after doing a few calculations I would like to change my answer. First however I give you the math. Judging by the members list, the first members joined on september 15, 2006(congratulations Speed, whitewheels, Hamsley, and Wings).
That gave 1292 days for the other 29557 members to join or
184 Weeks or
31,008 hours or
1,860,480 minutes or
111,628,800 seconds give or take a few.
So averaging it out that means that this forum averaged 22.88 new members each day or 160.64 each week or 0.95 an hour.
Well going strictly by the averages that gives 20 days to hit the magic number. So my new official guess will be April 19th, 2010. Maybe I can just get an appetizer for trying?