> It's more that if you put all of your employees up there, they start getting poached.

I hope you're joking, because that seems like a very silly reason in the age of LinkedIn and recruiter databases. It's probably very easy to find a relatively up-to-date list of employees for any given company out there.

My guess is that most small companies don't do this simply because they don't even consider that it would be a nice gesture to publicly recognize more than just the top execs.