You have to make people come to the realization that not everything on the internet is free. Much like people pay money for magazines and other common luxuries, so must they pay you to receive your content. The time is approaching where the windows of content release will open simultaneously. However, this breeds deeper problems. Be very careful and check all copyright aspects of a piece before using it or copying it.
Fair use is slightly different.
A small amount of use of another's work, which does not interfere with the commercial value or exploitation of the property, may be acceptable, however there are no hard and fast rules. If used for criticism or comment, it is most likely ok. Do try to get permission to use the piece though as it is always safer, easier and cheaper than battling it out in court. Give the viewer a little something extra. If viewers were only going to sit back and watch something passively, you'd be watching television right now.