I found a pretty awesome website to Wi-Fi general. Allows you to create a chatroom url very fast. Everyone is anonymous. Pretty handy with all the conversations getting mixed up in the thread.
Using this kind of chatroom you can just:
-Post what you have and want in the thread with a chatroom url
-You stay in the room as long as you are available for trades
When you see someone with a chatroom:
-If you enter and it's empty then that person left.
-If the guy is there you give him your friend code and make a deal. Continued communication.
Example:
Have 4 IVs Volcarona and Garchomp babies.
Want 4 IVs Togepi, Snorlax, Ferrothorn, Kelfki and other OU pokes.
DIscuss with me here:
http://99rooms.me/r/testforvp 