DP Daily Prompt: Key Takeaway

I think I am a new blogger. My question to all the experienced bloggers is: How do you get other bloggers to read your blog and write their comment? This one is my primary question. I have joined in late October 2012. I have written a variety of things,I find the response not that encouraging. I took the advice of wordpress ,I visited many sites,I left my comment. There is hardly any substantial response.I would like to know what the other bloggers do to increase traffic. One thing I did not do is I did not invite my friends,neighbours or acquaintances to read my blog. Can this be my problem?