How do readers find blogs?

I receive about 4,000 page views and about 1,000 unique visitors per month on my blog. Where are these people finding me?

There are a number of ways for promoting your blog:

1) I have done some search engine optimization to my blog by adding appropriate page titles, meta tags and descriptions and I have submitted the blog to the major search engines and directories.
2) My blog URL is in the signature line of all of my emails
3) I have done link building by contacting other bloggers and encouraging them to link to my blog and I link back to them.
4) I have submitted my blog to a number of blog aggregators
5) I think Viral Marketing has probably been the biggest contributor to building the audience to my blog. If someone reads it and they like the content, then they will forward the URL to somebody else and this goes on and on.