Unfortunately, we don't provide this functionality within WebEasy. It would require server-side scripting and some other advanced web development techniques. You can, however, create and host a message board on another website which provides this facility. Various websites host message boards for free.
One example of a free Message Board service is at http://multicity.com. You create a link from your web site, built using WebEasy, to the Message Board you create at Multicity.
What is a Message Board?
A message board is a tool people use to post messages about a particular topic. All postings and responses are permanently visible on the message board until the moderator removes them.