Topic page casing

1. I'm caught between (a) only capitalizing words which refer to a proper noun (person, place) and (b) using Title Caps on things which have become Things. Gish Gallop falls into a grey area. We should probably look for more grey-area examples in order to better set a policy. Maybe a category with which to tag examples would be useful -- something like category:unresolved/caps
2. rational:Main Page -- I added RW to the interwiki early on, when I was going for short over memorable. The full interwiki list is here. I need to add a note to the wiki page about each site for which Issuepedia has an interwiki prefix... and there's also {{l/rw|page title}} (e.g. Gish Gallop).