I'm aiming for at least one upload a day, now I'm fairly small so uploading so much will help me grow although I do think doing so many videos does impact on the quality some what. I'm putting in around 30hrs a week so I hope the hard work helps
So how often do you upload?

I'm currently uploading once a week, but on special occasions I may upload an additional video. I see why people believe uploading everyday helps you grow, but I tried that once, and I find that when you upload so often, the videos don't get a chance to do as well as they possibly can. Also, I try uploading videos that are difficult to get, and by uploading weekly, I give myself time to gain these types of videos. That way I can consistently give my audience great content each upload.
Definitely. Spacing your videos out over a period of time helps your videos get more views. I've scaled back from posting daily because of that reason.