I have a blog around the niche of blogging which helps bloggers to improve their blogs.
This blog has more than 1500 subscribers and it gets more than 10000 visits per month.
The readers consists of bloggers, entrepreneurs and social media marketers
I am selling banners at this site
125x 125 ads
468x 60 ads
300x 250 ads (below the post)
PM me if you are interested