mainstream money machines
 

the great thing about adult is that anyone - given intelligence, perseverance, computer literacy, willingness to learn etc - can just start doing it small scale from home and work his or her ass off for a couple of years and build nice money machines which just generate income bling bling bling.

questions:

where can you do the same in mainstream? is there anything out there which is even remotely as neat as adult?

Think ....'in transit communication add-ons'.

not sure I follow
would you care to give an example