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If I get branded terms in my search queries and hardly any generic/product related search terms in GWM, does it mean my site is not optimized for product related keywords?

Great suggestions by John. I would also check your other visitor-source stats: direct traffic and other [besides SEs] referrers, and correlate with other real-world activities and events. This relates not only to the possibility of other new backlinks, but also to any other marketing efforts you (or your client) may have been doing in, or before, the months in which your SE traffic dropped. If visitors are finding your site easily by other means (news items, collateral handouts, etc), your number and percentage of search-based traffic may drop.

If you are using Yoast for seo, there is an option which redirects the attachment pages back to the original post page :} if not , then you can use your robots.txt to block off these attachment pages :} hope that helps

Hi Jodi, If you are talking about 404 error in Google webmaster panel, I think now there is an option there to tell Google that following 404 problem has been fixed. You can select an URL and "Mark it as Fixed". Before they added this option, you should wait around 1 month for broken links to disappear from Webmaster Panel. Meanwhile your traffic has dropped with your keywords rankings. If you are using any software to track them, I am sure you will notice some negative changes. If you are not using, then better to do that, because this is one of the best ways to monitor your blog recovery. Hope it helps, Cheers, Russel

Thanks!  I didn't realize that I could see site speed in Google Analytics.

Yea, losing the redirects can definitely cause ranking and SEO problems. This can happen if the contents of the old site's .htaccess file didn't' get updated into the new site, or if using the WordPress Redirection plugin, the plugin somehow got deactivated or its redirects messed up. Get those crawl errors fixed, then give the SEs some time to recrawl and see if most of the problem goes away. By the way - nice looking site! Paul PS Marking whichever answer you found most helpful will help out other users and gives a bit of a points boost as well

I think you are taking my comments out of context. I said "You need to look at it from the context of your overall links". This is about having a natural link profile. This can be variety of link sources, link quality profile, Moz rank variation of your link sources etc. If the 120 links you got from the great blog posts at SEOmoz only contributes to a small percentage of your total links then you should be alright. If it however contributes to +80% of all your links then that is a warning sign.