I know a lot of HD stock footage sites like ArtBeats, etc sometimes offer a "monthly free video clip"... but I was wondering if anyone knew any other type sites that offer some free High Definition clips? Sometimes it's through a newsletter subscription, etc. Would love to pick up any free HD clips I can find to add to my stock library. Thanks!

They're not free but you might look at 'revostock(dot) com
They're a fairly new site but do seem to have a decent pile of stuff.

Don