Don't spam! Don't block! Most message boards don't allow flagrant advertising, but permit sigtags. Until publishing, make sure you read all laws thoroughly.

Do not text! Do not email! Do not spam! In most boards there is no flagrant publicity but sigtags are authorized. Before printing, make sure to read all laws thoroughly.

Don't burn! Don't burn! Don't burn! Don't burn! Message boards are a way to convey various views and ideas to individuals.

There are messaging boards that enable any kind of publicity, but they're not very helpful to network or learn something.