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I recommend you read chapter 7 http://www.seomoz.org/beginners-guide-to-seo Are those 21 micro sites selling the same things? I rank for many highly competitive keywords and to tell you the truth, I haven't built any links in 6 months! Create GREAT content and people will naturally link to you and give you Facebook likes.

I'd remove all of the low-quality links like that.

I recommend that you take the time to regularly read about the developments in SEO, otherwise you'll be months behind, as you currently are. Use common sense rather than metrics to decide which links will be good for you. If it's not relevant and from a credible source, then there's little use. Here's a great video from Wil Reynolds about good link-building strategies... http://www.seomoz.org/blog/2012-mozcon-videos-are-here

Keri i got u... I have to build my 60% to 75%  to related my Miche and rest of the link from Very good Page and domain Authority.Only Build a link from higher page and domain authority. Thanks much keri