I feel your pain
Or how about sponsors who send out an e-mail telling you about some new site or marketing tool on such and such page and even the front page mentions it but it's not there or is hidden behind obscure or poorly chosen links.
I get nervous with the "build-your-own-links" especially when they are using a system that doesn't show your refcode when the link is opened but the regular index page. I won't even use those if they don't show clicks in the stats.