Visitor messages vs. Personal Message?

[Ingomike]

How do you send a visitor message and how is fhat different from a personal message?

 

[Phase2]

Go to someone's profile (can't use mine because I have visitor messages disabled).

From there, you can send either a visitor message or private message. A visitor message is visible to everyone, kinda like a forum post. A private message is more like an e-mail, not visible to the public.