I use it all the time (looking for members for Toto-rak, since it's the only thing I can see myself doing), and only found someone with it a single time.

/shouting in Uldha is still more efficient.

Please SE, just have a look at EQ 2 LFG system. It has got everything needed for FF14 (roles specification, a little note, LFM and LFG modes and a decent interface).