I read that web site (and several others) a few years ago too. This
is not the first time mold on maple syrup has been discussed here. The
information at that site may be accurate but it is incomplete, it says
nothing about how everyone's immune system has a different tolerence
to molds. The types of molds that can survive the concentrated
sweetness of maple syrup is not something I'd want to risk ingesting
as it very well may be quite difficult to rid your body of; probably
causes a lot more serious fungal blood infection than atheletes foot,
jock itch, yeast infections, and nail fungus. I don't recommend
trying to save an old bottle of maple syrup one probably forgot they
had, if it wasn't used for years they forgot they had it, I strongly
recommend tossing it. Remember, with fungi what you see at the
surface is only the very tip of an immense iceberg, removing the part
you see (the fruiting bodies) is a very, very small part of the
organism. By the time you see the fruiting bodies the organism's
mycillium have infiltrated all of its host. You really can't cut away
a fungus, only the least educated would think that removing the
visible portion of a fungus renders a food safe, NOT!