Lot of times you will hear people asking for marketing advice “where can I market my website?”. In most cases people feel hopeless as they are new in marketing.
Answer is actually very simple “go where the salmon are”. If you wanna fish salmon you gotta go where the salmon are. You can try everywhere but your best chances of getting salmon is going where they live.
In simple words this means you have to find out your target audience, then find out where they gather, then market there. Some niches are …

Recently CraigsList introduced the phone verification for their site. Now guess what some people sees business in this.
How? People living in the USA create accounts, do the phone verification and sell it to other people who are outside USA.
Guess nothing could stop the advertisers, or shall we say spammers.