I was newish to the game was in a guild but we didn't have a hall (cuz we were all new). I found out that you needed a celestial sigil for a hall - holy crap they cost 40k!!!! I guess we are never getting a hall

I see this guy in LA saying he had 8 Celestial sigils and was giving them out for free.
So I asked him if he was serious and he said, "yeah and I'll give you a un-id'd sup monk rune, maybe it'll be healing *crosses fingers*"
So he gave me the sigi and the rune, which turned out to be a smite (I sold it for 19K).
This one person handed me 60k just because he wanted to, the only thing he wanted in return was to see what rune I got after I id'd it, and he seemed genuinely disappointed that it was not a healing rune.
Since then I have always tried to give back to others. I have given out about 15 max firey dragon swords (one even had a +5 def mod) and I have sold all my greens that I don't need for about half what others are charging. I figure it is the least I can do.
Edit: I also do free runs. The tips are usually better than what I would have charged anyway.