How popular a blog is determined by how much comments it gets for each post. More than alexa this will determine the blogs popularity.If you are looking to advertise your blog then find blogs which will get good number of comments for each posts and never go on alexa rankings.

Top 6 ways to get more comments on your blogs based on my observance of several popular blogs.

1.  Use Commentluv Plugin. This is an excellent plugin where the last post of the commentor’s blog will be displayed along with the comment. I usually love commenting on blogs having this plugin.

2. Top commentor’s plugin. This plugin will display the top commentors for your blogs and is a great way of encouraging visitors to live a comment.

3. Making your blog do-follow one.

4. Creating small contests. A contest always need not be a big one having 1000’s dollars worth prizes. Instead you can create small contest which will have lesser prize money but spreading it over a long period.

5. If anyone comments on your then you should reply to his comment. Try having some interaction going on.

6. Always put the title of your latest blog post in the forum signature.

I will be adopting the commentluv and top commentors plugin ASAP