Use tags for whatever's hot at the moment. For instance, use tags for the hottest songs out. Glamourous Fergie Black Eye Pea Ludacris Justin Timberlake Janet Jackson Michael Happy Slip Happyslip Carmen Electra
Those tags will get you major exposure.
You can also post your vidz on other sites such as
http://www.VideoSlacker.com
http://www.Break.com
http://www.ThePinoyTUbe.com