I have a problem with google webmaster tool: I had old website(now kept SEO) and few months ago i redesigned web and changed platform to WordPress. Now the problem is i have errors 403 and 404 on webmaster. for example (403) :
www.mydomain.com/blog/?tag=something . Google crawled this on my previous website and now, i am using totally different permalinks in wordpress. Can you tell me what is the best solution for this problem - to do a redirection or to submit requirement for deleting this crawled URL ? Option with deleting makes sense for me because permalink struct. is different in my new site. Also what to do with 404 errors- is it safe to remove that links from google?