CrimsonDX: You are taking this far too seriously. Chill out, give it a try, and if it goes badly, no great loss, right? Clearing something crazy like a NDNB challenge is not what's expected; it's the extreme exception rather than the rule, but that's not even the point - it's just something for fun, and to help your playing improve, and you'll still be able to compete with everyone else (aside from which you can play on any difficulty you choose). There is no need to get indignant or worried about being asked to attempt something that could result in a game over. Attempting at all is far, far better (and more enjoyable!) than not giving it a try for fear of failure. :P
Just how difficult are these challenges going to be? I'm hoping that we don't get something like "SA Lunatic no-focus pacifist run with Reimu/Aya at 90 FPS" for the first week. (it would be cool to see the GOD-tier players here accomplish that one, though)
Would we be uploading replays to gensokyo.org like usual?
The special challenge part of each week could vary quite a lot in difficulty; some might be 'see how far you can get without dying/bombing', or 'how much graze can you get', or 'how far can you get without focus', or 'how high a score can you get in this stage in stage practice'. They'll all be available on every difficulty, and clearing isn't a requirement, of course, so they're all attemptable regardless of difficulty. :V And yes, gensokyo.org will be fine.
Btw, does this tournament just use the danmaku touhou games, or does it also include the fighters? I doubt it does but I'll ask anyway.
Just the danmaku games, I'm afraid.