For Molly: RK here
I'm an old snatchee from Atlantic due to cross-shard recruitment. And like other who've made the switch, I was a happier player because of it.
There's no reason to subdevide the small playerbase of UO. We all 'compete' for the same players. If a certain shard or guild is luring players away I suggest you make your own guild/community more interesting and attractive. Or better yet, join ours If a person joins another guild or shard it's because he hopes to find something there he lacks at the moment. Something to think about, not fret about
But like the rep told you, it's another thing to advertise in roleplaying locations as it might be confusing or break the roleplaying atmosphere in the area.
Now let me hide back under my rock!