Emilly Orr has a rant about the current unstable state of the SL Marketplace direct delivery system, which many have reported is failing, helpfully accompanied by this illustration and comment:

Maybe it's just me, but the longer this drags on and the more businesses are hit, and hit hard, the more this seems like a metaphor for Second Life as a whole...

Evidently it's not just her: Inara Pey notes other problems with the Marketplace. To be fair to Linden Lab, direct delivery of SL made products from a web-based e-commerce site is a massively complex undertaking that will probably take awhile to get right. However, as Ms. Orr notes, a lot of people's livelihood's literally depend on it working. I've asked Linden Lab for an update to these issues, and will post their reply, when and if I get one.