A good example of where the Mac App Store falls over.
MultiMarkdown Composer 2.0 announced on MU on Sunday 10 February. Only notification users (i.e. people who've bought it on MAS) get that there's an upgrade is by checking on MacUpdate.
Well hooray. There's v2. So I head over to the MAS. "Composer Version 2 is on sale for a limited time . . . It returns to full price on February 11th. So don't wait -- buy it now!"
Well, it's now 17:40 UTC on 11 February and it's not on sale any more. Gives a new sort of urgency to "limited time".
You can get a non-sandboxed version from the MultiMarkdown Composer website which "respects" the MAS licensing for v1.n but beyond that you have to buy v2 from the MAS and then, thereafter, well, frizzle my scrattocks with a Paschal candle but i have NOT THE FAINTEST IDEA what happens after that. I *think* it means if you bought v1 you can use v2 but if you want to use v3 you'll have to buy v2. Sometime. Maybe now. Can't be after v3 comes out because then v2 will be withdrawn. And, oops, I don't mean "buy". I mean "rent".
So it also gives a new meaning to "simple" as in "the MAS makes things simple".
Damn good app. Fletcher Penney is a damn good developer. But this MAS channel lark is a real boojum up the wazoo, don't you think?