JB,
Yeah, I'd like to see some serious half-to-half tests on this before I'd buy it. Among other things, his chemistry is faulty; onions produce S-oxide, not "sulfuric acid". Sulfuric acid *is* produced as a byproduct of S-oxide reacting with the saltwater of your tears, but last I checked, avocados do not have salty tears. Also, one would expect a strong acid to brown the avocado faster, not slower.
Alina,
Unfortunately, some bugs in the board make it impossible to color links. When you add color to them, they stop working as links.