Why is h2o good during curing when wet dark condition = problems.
when you are 'curing' your buds, what is actually happening is this:
when your bud is hanging, it does not dry evenly. moisture levels on the the outside layers of the bud end up relatively low while on the inside layers moisture remains high. this leads to dry crumbly buds which have a 'green' taste in the long run.
when you cure, your letting the remaining moisture in the interior of your buds spread out evenly thru out the bud.
think of it like have a dried out sponge... and you sprayed a lil water in line up the middle. after a few hours the whole sponge should be soft but not moist.
too much moisture when you start the curing process is usually what leads to mold. outside contamination is very difficult to avoid, and if your nugs are too damp going in you just gave the spores a perfect incubator to breed.
this is also why i would also avoid 'rewetting' buds you have let get dried out, unless you plan on smoking them right away. molds and fungi breed like wildfire in warm damp dark places (like inside your stash in your pocket) and the presence of h20 in relative high levels is often the only trigger spores need to activate.
definitely works though. There are a few different ways to do it, some better then others. I suggest you just keep a better eye on the bud and remove any signs of mildew. I would think drying the bud out wouldn't necessarily be good. I just know it works... 
Only change if there is an advantage to be gained.