Welcome to WebmasterWorld Guest from 184.108.40.206
7k daily isn't huge
One of my website were getting appx 7k unique user a day and in just 4 days it is reduced to 700 user a day.
we use web photos and wallpapers with the courtesy link or name and use disclaimer as well.
I WILL TRY REMOVING THE ADSENSE
A lot of the more proactive members have noted that Original publishers protect their content via DMCA.