I agree with Derek... First off... Alexa is a dying dinosaur which has no relevance in the current standards for SEO and marketing for sites.

Secondly... DRM, in my honest opinion from talking to website members and owners is that it all comes down to trying to keep your products from being stolen and posted on other sites, forums, etc. There are several sites out there that are still really bad about having DRM on everything and on top of that, the license expires after a certain period of time, so even though i paid a monthly membership, this video i downloaded is going to be worthless in 32 days when it expires. That just doesn't seem fair to me. Use a flash interface for your movies if you're concerned with piracy and give the members of your site a little less hassle with worrying about DRM. Just my opinion