Every business takes time to established and make profits. I invested some time analyzing my blogspot blog. This blog i started in 2009. This not niche website. Well after becoming leader in worlds worst niche. I am quite happy. Because my blogspot traffic is increased 20 to 400 visitors per day. I am in 7 position for 49k exact traffic from india. and total niche for long tail is more than 1,40,000 visitors per month. This blog was vanished for 1 week from SERP last year. I invested 100s of hours on this blog. Like making profile links and social bookmarking etc.
What i learned from this
I learned that we can be a overall niche leader in one year or so. Without investing tons of money and all. But it will take lot of lot of time. And starting some big sites and killing your lot of time is very risky. Because what if our niche websites will fail.
So, try your luck in niche website making and than start authority site project.