My belief is that videos that were entered with non-capitalized names shouldn't be forced into conforming, esp. since the creator might just have had a reason for doing so... and besides, capitalizing <i>every</i> word (articles and other short words are not exempt from the rampant capitalization) often makes the title just look bad.
For instance, the videos "always" and "...and forever [dreaming]" show up on searches and in <a href="http://www.animemusicvideos.org/members ... >trythil's profile</a> as "Always" and "...and Forever [dreaming]". Rather less attractive, if you ask me.
I was going to call my next FLCL video simply "'... evil alien.'" (- Naota, episode 2), but it would look a LOT worse (IMAO) capitalized. Same kind of thing with <a href="http://www.animemusicvideos.org/members ... nder</a>'s "<a href="http://www.animemusicvideos.org/members ... ">'Mutsumi, what do you think of Naru?'</a>"...
Sometimes the results can be rather humorous:

But still. Something to at least consider?