Well, personally, when I want to increase my traffic or probably offer a hyper link to my page by letting others know I exist, I do it with the help of blog commenting.
Now, let me tell you one thing there's no such thing as a blog commenting site. Secondly, if you are looking forward to finding one, it's best to check the readers section in your blogger or WP section for freshly pressed blogs (these are the active ones - obviously, because they have recently published an article on their wordpress blog/website.
If you are a WordPress user, go on to the reader's section - you'll find a filter on the left sidebar asking you to offer them tag or keyword so as to get the blogs from the particular field
So, when I look forward to such websites (funny jokes - status and quotes) being my niche, I type in non veg jokes and then get a list of blog posts on the right side, these are recently published articles.
Don't fake the fact that you read an article. Be genuine, read it, maybe it would help you gain insight - go on to the comment section and appreciate their efforts in pinning this down and in return also ask them a favour to check back on your blog by visiting myblogurl.com (paste your blog link there)
You can always look out for those blogs that offer insights on blogging and then comment in the sections.
Join forums and Facebook groups related to blogging and spread the word too. There are a ton of places on Blogger and Wordpress itsefl that offer you to blog comment.
I hope this helps. Happy Blogging to you
