Google Chrome saves all my information including that of Techyv.com.

I really don't know how this is happening.
I cleared the history of Google Chrome including my email address and everything else I could. When I reconfigured Google Chrome with the same email address with which I have configured last time. I have got the list of questions which I asked on Techyv back and they appear when I try to post a question. Almost all data are back. How can I clear all the data so that my Browser will run faster?
