Hey Jcasia! 'Yes', I have used Safelist to generate both leads & sign-ups.
I know you've probably heard that Safelist are useless, but that's only coming
from those who didn't use it right, or don't have the right mind-set.
In my experience, most people cling to 'Traffic Exchanges', or what I call
"Surf Exchanges". In my opinion, that is mostly a waste of time.
However, Solo Ads, Banner & text ads, are of great value.
The secret is: You've got to go for volume (meaning 1500 solo ad clicks per week),
or don't do anything at all.