When a FReeper is about to post an article, FIRST present a page in which he provides the URL, then clicks "Next" (or whatever). Look up to see if this is a site that is:
- prohibited,
- requires excerpting, or
- is fair game.
(My blog will always be "fair game". An entry from December, just appeared in a church newsletter in the UK, with attribution. Nobody's seen fit to post anything to FR, but then again I can't see why they would. *\;-)
Present different screens depending upon the result, so the posting FReeper knows what the rules are BEFORE he goes through the entire posting process.
That sounds like the best approach.
I believe that it already does a lookup.
Some sites like USA Ptooey require FR to link only, no excerpt and some like the WaPoo must be excerpted and you’ll get hit with a reminder before the thread can be POSTed.
I think it’ll even notify you if the excerpt is too long.