How to find low quality and bad links in Google Webmaster Tools

As per google penguin, all the low quality back links are going to affect the website SERPS hugely. So, we need to find all the bad back links and then remove them one by one.
What I would like to know is, what tool do you use to find all the bad back links ?
And how do we know which is a bad back link or bad website, where our link should not be there ?
webmaster tools showing 22, 380 total links in 130 domain So how can i check bad links.. ???
Here is my website link
myblogger-tricks.com

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