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WordPress SEO by Yoast is by far the best SEO plugin I have used for Wordpress. Highly recommend!

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Hi Yoseph,

To find broken links I like to use the Check My Links plugin for Chrome.

As for the 404 errors. I believe there is a way to view which pages are linking to them using the SEOMoz tools but I prefer to just use the Screaming Frog spider. Once you have crawled the site with this tool, all you need to do is select the response codes tab at the top, filter by Client Error (4xx) then click on the links and select the In Links tab at the bottom to see the linking page.

Hope that helps,

Adam.

I haven't heard of Voltrank specifically but I would probably advise to stay away from these types of link exchange networks. You can't always guarantee the quality or relevance of the sites that your links will appear on. Also, Google is pretty savvy at identifying these kind of networks. Personally, I would avoid them.

No problem. Happy to help.