I perma for auto-greeters.
However, the horribly scripted ones are fun to play with. You just type "connected." and it sends the auto-greeting.
Truce's works like this. He tells me it's because he doesn't want to mess with secureClientCmd_ClientJoin, which is understandable, but his method is still quite open.
I actually built my own method I'm sorta proud of compared to Truce's way, with inspiration and help from Flaw... But I can't show nooblets this code.