I've been spying using VPN and browsing adult/gaming sites to successfully spy app installs and games, but what sites can I browse to find sweeps/pin submit pops/landers?
Give me your dirtiest STM!!!
Thanks in advance 
1) Pin submits are carrier based. So you will be able to see only campaigns on the carrier / country your device is in.
2) Sweeps can really show up anywhere. Try free mp3 download sites, torrent sites, etc. Usually good place to start. Also consider what runs where or similar services that you can just do keyword searches for landers.
sites like exoclick list out all their premium sites that u can spy on, turn on the vpn and user agent and you should be able to see most of the stuff. and if you want to go deeper into sweeps, u can spoof your ip using firefox (not sure how but someone showed me before). take the ip from your campaign data in
you can also try blackpops ppv tool
Wow thanks for the tips guys, this is great stuff.
I will take a look at mobile ad scout. I'm currently only running sweeps so the problem with pin submits shouldn't effect me until I decide to start on them.
I'll browse some free mp3 download sites and exoclick premium sites, that sounds like a good place to start