Over on icv2.com, they report "Gen Con Nearing Limits of Indianapolis" here.
Also, on enworld.org, Michael J Tresca asks "Is the "Conpocalypse" Nigh?" Read his related thoughts on the convention-size problem here.
Finally, on kaskoid.blogspot.com, Tim Kask's Dragon Grumbles blog, Tim weighs in with his thoughts on "How big is too big? Gaming Cons today" here.