I don't believe there is a rule that limits the number of posts in any given period. It goes without saying that if posts are nuisance posts or if content is inappropriate the posts can and will be pulled by the site monitors.

But if posts are heartfelt and with sincere content, then I think that one can post away.

Some people on the forum are frequent posters and I always enjoy their content, especially when they include visuals and quotes. Thank you, frequent posters!