What resource does a tube site use the most?
 

RAM
CPU
Disk read/write???

cheezits, in the munchy category.

Bandwidth my friend and storage....oh cant forget the most important ....Content! :-)

how about from the above 3 in my original post? what is the most important for a tube site?

Bandwidth #1
Storage #2

2 Things that are getting cheaper by the day.

database calls is up there

You can run a tube site and not use much bandwidth or RAM, CPU, Disk read/write as long as you dont host 100s of videos yourself ..just use embeds/ links with pics to other tubes or you can even host the videos on places like yourfilehost and get traffic back from them Its as easy as that.