Hi,
we are planning to make major changes in our site (SEO optimalization) and recently I read post in some kind of blog speaking about problems with FB Likes, Tweet etc when we change URLs.
So the question is: Is it true that we lose social rankings when we change URLs structure( e.g. from http://domain.com/aaa/213/aa to http://domain.com/category/text/text), even with proper 301 redirects?
