You guys are kinda missing the point.  The game is that you follow the number before you, so if the last post was 
437 then your post would be something involving the number 
438, then after that 
439, then 
440.  To keep things in line, just look at the post number, we're keeping the numbers locked to those.  So the next one in line will be 
441.  So here's my post...
