Wayfinder has an open chat channel you know.
For ease of Trading, Advice and Grouping type /joinchannel Wayfinder and use /1 {or /2,3,4 if you're already in another channel} to type in said channel.
Currently it seems only a handful of people even know about this channel so you'll need to advertise it in-game too.
The more people in it the better the Wayfinder experience gets for all.