I recently changed up my companies blog to a different URL, mywebsite.com/category/blog -> mywebsite.com/blog, to try to SILO the site as much as I could with still making the navigation work. We dropped in SERPS most likely from doing this and 301'ing everything to the new blog. I wanted to see what happened and it sucked. But then I started going on a rampage posting new blog posts, with nothing else, just posting. I was doing about 1-2 a week, and trying to do 3-5 a week. Within a day we were ranking for new keywords and slowly gaining rank back for new keywords within 2 weeks. We are now back to being indexed within an hour of a new blog post. One thing I didn't change is having hootsuite and IFTTT posting to web 2.0's as my RSS feed is updated.
We have also picked up new in real life clients because they saw the passion I write the blog with. No one will ever tell me what keyword and search engine they found us with though.