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For the most part, links from askives and mrwhatis are ones that I classify as "not seo made".  They're autogenerated pages that link to almost every site on the web.  If you were affected by Penguin it's definitely because of links that you made.  Look for self made links from low quality sources like article sites, low quality directories, bookmarks, etc.

So Lets say I embed analytics code into the iframe. Visitor filled up the details in the widget and click submit button then it will record that as a visit. But how much time spent or pages/visit will GA recognize.

Typically you will have your bases covered by using both Google Webmaster Tools and Bing Webmaster Tools. They both report and value things differently, so you should (in my opinion) monitor both of them. The only other reason I can think of using another webmaster tools suite would be if the geographical regions you are targeting prefer different search engines. If that is the case, then I would suggest using that search engine's webmaster tools as well. You will not increase your PR or DA by simply signing up for these tools. You could potentially increase your rankings if you use these webmaster tools to fix errors that are reported, which could possibly increase your rankings (depending on how many errors you have... I have heard that Bing is more concerned with errors than Google). Hope this helps. Mike