ok, first of all, im nearly 40yo. i know how to object-oriented program (the basics), i studied for license to buy/sell securities in 90's. purewcnub - ha, yes, you understand the basics, but there is more going on than that. people adjust the price much faster than would normally be played out. (my locked post from a couple hours ago gives one example of this) Makoto_the_Phoenix - i am very sure you are wrong. until i know better i wont give an example, but why not put in a order for 1000 items, sell them to yourself, then do it again and again. did this not occur to you? now it seems more likely the ppl that do this won't be talkin about it, since there are now a few replies from people that honestly didn't know this has been going on, or know and just trying to keep what they feel is a secret only for the select few. Anyone else have something substantial to add to this topic? may not be on for few days.