Built in Cut Tag
Short, concise description of the idea
Posts over a certain line length would have a default cut tag
Full description of the idea
Many communities prefer that long posts be put behing a cut tag, so there's less to wade through on the page. They usualy put this in their faq, but not everyone pays attention. This idea would put a tag after a certain number of lines of text, so that any subsequent lines were hidden.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation