Don't send us silly gripes about life in general. We are not the national complaint department, despite our name. Work should also be appropriate for writers and artists of all age groups, so bear in mind language content. This especially applies to those who send in their work by snail mail. As the guidelines state, poems don't have to be gripe related, in fact, I prefer they are not.
Any length is fine, except epics.
As for form and style, we're open to all and most subject matter is acceptable too. Above all, show us insightful, thought-provoking verse that creates a mood or image. Guidelines can be obtained from the site. Sour Grapes philosophy may be more on the bitter side, but we also enjoy seeing articles and poems with a sweeter ending. Simply put, take a negative situation and turn it into a positive one.