Create more blogs, hire people to write the contents for you, advertise the website for low competition keywords, monitor the progress, maintain the blogs that making money.
Perhaps buy a few existing sites that are already generating revenue and work on marketing those sites with the rest of the cash.
no need to waste money and time for more sites...... create one site and invest to promote it with contents and links............ you will enjoy it soon
if you are an adsense guy, i think you should invest in. but if you are know nothing about adsense, just say no.
let's say I hire someone to write articles for me. how do I know that article is a original one (and not copy/pasted) and also how do I know the quality of it?
I will invest the amount in two business portals. I will do their SEO, marketing, promotions and will repeat this process until I receive smart targeted traffic. Adsense is going to be my secondary source of earning; primary source will be my offered services or products in my portals. Good luck,