sites: like nastydollars (nd)
stats: nd plus maybe campaign support (campaignID with numbers and not my campaign names as i dont want others to see &campaign=YahooOptimized
)
promo material: nd
payout: nd
downtime handling: nd
webmaster support: quicker than nd
what i HATE:
programs changing linkcodes and site urls (like when they think nats is sexier than whatever). i hate to have 100s of sites with outdated sponsor links.