I ran a 500 clicks campaign on Scarlet and it threw me all the way to the 2nd spot on DLF..
Which is kinda interesting on the other hand... their delivery rate seems to be very quick and effective..
I am up to 466 hits on DLF and I was only running scarlet and ITB.. which provided only 20 visitors to my campaign so far..
So, most of those came from Scarlet.
No new refs though but with a 500 visits campaign I wouldn't expect any on DLF..