I have been trying to choose products to sell from the best-known networks (we all know who they are) and it is basically the electronic equivalent of putting your hands inside a very, very large vat of snake oil and then sifting through looking for diamonds ...
Just an example: the best-known network has 300+ products in the Computers and Internet section. Most of them start with something like:
"How I Made $$$,$$$ in 5 Months Using the Secrets I Expose in this NEW Guide AND How You Can Do It Too!"
"Top IT Consultant spills the beans and reveals his secret techniques..."
"Finally! A Quick, Easy and Painless Way For YOU To ..." etc.
"Finally Revealed!!!!!! The Secret of "(fill your own brand of slime here).
Gaaaaah! Seriously, does anybody ever fall for this garbage? Besides, once you actually do take a critical look at the products they are almost invariably simple-minded, low quality stuff (I am a software developer, I know what I am looking at).
OK. This is the methodology that I am following:
1) I started with the 300+ entries in the Computers & Internet section.
2) I eliminated every vendor that does not have a Spotlight. The reason for this rule is that the spotlight gives you the number of subscribers, and I want to know that. A vendor without a Spotlight is a vendor that does not want you to see the number of subscribers they have.
3) I divided the list into services (i.e., something that you do by going to a website) and downloadable products, because my Gravity criteria will not be the same for both. In total we have 15 possible services and 46 downloadable products.
4) For services: Selected 15 of them, mean Gravity is 54 (but with a Standard Deviation of 92!!!). Excluding the top two outliers (Gravity over 200+) we get a more sensible mean Gravity of 21 with a Standard Deviation of 26, and 13 services left.
5) Products: 46 products that did not stink too much, mean Gravity is 8 with a Standard Deviation of 12, which is reasonable. Stink factor is low to moderate. About 5-6 of them actually do something useful (mean Gravity for the useful ones 0.8 :p).