Matthew Baldwin is missing has resurfaced!
The latest update to Defective Yeti was March 18, which means that either he has been busy with more important things, OR he is lost, trapped, or being held somewhere against his will.
I am betting that it is the latter, and I'm not waiting around any longer. I'm taking action.
I haven't been the only person to notice, and I've joined forces with a few folks to help negotiate his release/locate his overturned bicycle.
Here is snapshot of my search-and-rescue outfit.

Update! Others have joined the hunt:

Maggie Mason has begun scouring the map.
The Cardhouse Robot is also searching.
Evany is yearning.
Fussy has a missing poster ready.
Symbolcraft has begun NaFiMaBa 2008.