Sounds dumb, but my flight sim wiki is Google.
Search things about the 727 stuff, land at the CS forums and read Lou's tips. Searching for performance stuff, land at Avsim and read Bojote's tips. Searching for general system stuff on the 757, find Smartcockpit and read there. And so on.
But I think a saw a wiki approach here and there before, so one always has to ask, in that devil's advocate style, if the effort will pay off there when starting a new one.
Please don't read that offensive, guys.

Nice picture there.  :)

Tell you a secret, guys. Lou needs a spell check too since every time he wants to write FMC, sissy stuff appears.  ;D