Just follow the global market rules, no useless post, no scam.
If we make a deal, you'll send first, not me.
If you are buying/selling and offer stupidly (eg, if u r selling, u offer me a price which is higher than market price, if u r buying, u offer me a fu**ing low price), I'll counter with a stupid offer.
In short, shitty offers, shitty counter-offers.
That's it, have a nice day! :)