vivalasvegas - 12:25 pm on May 24, 2013 (gmt 0)
Hello and welcome to WW.
Google does optimize ads so I wouldn't block text ads. Also, blocking too many advertisers from showing on your pages doesn't help with earnings either in my opinion.
4. Is your site mobile friendly? Mine aren't and indeed revenue from mobile visitors is much lower. Maybe someone with a mobile friendly website can tell us if mobile revenue is anywhere near desktop.
Making your channels targetable may also help (advertisers would then be able to target a certain ad size on your pages).