I see some webmasters collect thousands of typos and sort of duplicate domain names.

But so far i have accessed is the source of income is merely parking them, at SEDO or some lookalike networks. Is it worth the money, I have tried health/attorney related keyword domains and placed google ads, But all shock they also give me 3-7 cents per click.

I have recently read shyam disclosing getting 2-3$ clicks on SEDO, So what kind of domain names should i register, Please give some ideas/details that i may get to earn some bucks from the parking

Importantly trademarks/typos get any part of clicks in actual?