I just heard this news today - what a bummer.  There was over 109 BTC in the wallet until just recently.  Obviously you've made your decision, but it's too bad it couldn't continue until the wallet ran dry.  It was only this year that I started to pitch Bitcoin 100 to local non-profits, only to discover it was basically over.

It's now going to be a lot harder to overcome objections to non-profits accepting bitcoin.  "Why should we jump through all these hoops?" would get wiped away as an objection if a $1,000 donation was in the offering. 

Would have been cool if this could continue, but thank you for doing it for as long as you did and as successfully as you did.