Have you heard of fiverr? It is a great little site where you can get all kinds of jobs done for just $5. I started out buying "gigs" there for little things and now I actgually offer gigs on there too.
I do some voice over work, but also create videos of your website. If you would like to have me review your website, or create a tutorial for your website or webappliction, definately check out my gigs:
You can also check out samples of my work on Youtube:
I also recently started offering a gig where I will create a video of your Android app. The videos can be used for any kind of promotion you want!