Online Marketing schemes

wimblewomble_2

I know there are loads of scams out there, and the promise of riches should be a warning, but I cant work out where the problem with ones where they say you can make money with on-line marketing.

Below are two examples of what I mean:

http://www.!!!!!!!!!!!!!/whoisjosh/myincomeprograms.htm
http://www.thetopearner.com/overview/

Wheres the scam?
Is it a sort of indirect MLM, where the "product" they sell you, ie, marketing tools and DVDs, are the very same DVDs you are expected to sell on to others?

I consider myself fairly wary of such things, but have always wondered where the snag is with these.

whoopidy-dhoopity: the exclamations are freewebs
sorry if I shouldnt have posted the link. perhaps a moderator could advise, please. thanks