Launch site, no inbound links, nothing indexed in google, buy ads, get subscribers. Now, 6 months later, pages are getting indexed and starting to rank higher f

Launch site, no inbound links, nothing indexed in google, buy ads, get subscribers. Now, 6 months later, pages are getting indexed and starting to rank higher for keywords that actually convert. About about 40% of signups now come from adwords the rest organic. Putting videos on youtube proved to be a quick and dirty way to get visibility in search results while the site was nowhere near the top 500 in search results. Only problem is it's a small, niche market and it's hard to get much quality traffic. Still, an extra 2-3K a month is always nice to have around.