I think I would include the Big Evil companies just because they generally have APIs which make it easy to retrieve info -- but they'd be flagged as evil (with links to the details (e.g.) for each).
Ideally, though, the whole thing should be cooperatively run -- and the decision as to what information to include in the UI should ultimately be subject to revision by the collective.
@woozle @andre @deejoe when you say the /collective/, do you mean all consumers or a select group of mods? That's the tricky part b/c while I think (for eg.) #CloudFlare is a show-stopping evil that needs a big spotlight most normies are ok w/it. I would put up a fight to get CloudFlare flags while the majority wouldn't care & there would even be some who fully oppose disclosure of CF. What then?