Well the town noticeboard is certainly a stalwart element of MANY fantasy environments. So I can see no reason (other than technical ones) for them not to implement such.
It is certainly always a better start to an adventure than having everyone meet in a tavern :D
"The note pinned to the weathered trunk by a single bent and rusty nail looks to have been there for quite some time.
BRAVE ADVENTURERS NEEDED FOR A DARING QUEST.
REWARDS WILL BE COMMENSURATE TO THE RISK.
Enquire at the sign of the Drunken Basilisk, ask for Vincent."
