well, we did a test with some client for a site converting around 1:800 overall
Although I don't think this would be a problem, since I didn't ask for permission I won't give much details since it was a quite big sample and our client could be identified, so using percentages:
days of sample: 7
CTR: 0.032% (for those weak at maths, 32 clicks per 100000 page views)
Qualified over CTR: 27.01% (visitors clicking on a second page or join page)
Sales over CTR: 0% (self explanatory)
CPC over overall CPC: 773% (cost of every click compared to CPC based on all other data sources)
So I don't know, maybe with some tube sites and a way too specific program it may convert. But if I've to try everything and research 10000 tube sites with 100000 different sponsors, it's easy to see it will depend on luck or wasting millions of dollars until you find the right combo.
That being said, maybe tubes with sponsor content convert better, our research was with mega tubes. But based on our experience, I'll say that tube sites don't convert at all, while admitting that maybe a few lucky ones may have a different experience.
and btw Ray, if you can convert Nasty Dollars sites at 1:195 (that's almost filtered SE ratios) then let me know your site and I'm sure we can make some business, we've some huge clients behind our back
