Yet another issue with a venue not being able to keep up with demand of a coupon.
http://forums.whirlpool.net.au/forum-replies.cfm?t=1567530&p…
and
http://rainbowtatt.com/web/why-did-cudo-com-au-ditch-ghermez…
Group buy sites need to be more diligent in checking out the validity dates of the coupons and the venue sizes. In this case, it's reported 4000 orders were made to Cudo x 12 = 48000 cupcakes. How they could think a small shop could make that many cupcakes (of good quality) is anyones guess.
They did do the right thing and be proactive with their refund instead of putting the onus on the customer to decide.
I think getting featured on popular group-buy site is like a website being featured on Slashdot or Digg (not sure whether this analogy works for everyone), except you have to pay.
Heaps of traffic/sales and huge cost to calm that extra traffic/sales — but how much can be retained is another story. The theme this year seems to be on those group buy sites, but whether they will still be popular next year?