Clipland

USA

• AtomFilms since residing under atom.com, the once very promising short film outlet AtomFilms is now more like a second youtube. Still, channels like "Festival Hits" get close to past glory
• YouTube's short film channel the 500 pound gorilla of online video
• iFilm wikipedia (dead) (once a short film outlet, now an MTV owned rebranded spike.com)

United Kingdom

• shortfilmcentral.com sort of a Clipland sister site.

Germany

• AG Kurzfilm Bundesverband Deutscher Kurzfilm (German Short Film Association)
• Shortfilm.de Das Kurzfilmmagazin
• shortstream.eu pay-per-view, "rent" and watch shortfilms
• shortfilm.com portal of the KurzFilmAgentur Hamburg e.V.
• kurzfilm.de small portfolio

France

• pocketmovies.net once a very light but resourceful online video outlet, the domain is now a redirect to sph3re.tv. Still, some shorts to watch...

Festivals

• festivalfocus.org large database of festivals
• without-a-box Amazon's film festival submission service