Understanding 301 Redirects
A 301 redirect is basically a permanent redirection of one URL to another. Whenever site visitors or search engine bots land on a redirected page, the redirection code sends them to a specified URL from the one they typed in or selected from the SERPs.
Search engines in particular are given express instructions to index the new page instead of the old one. Any rankings accrued by the old pages are retained as long as the 301 redirect is done correctly. It also prevents any possible duplicate content from being shown, especially if both versions of the page were to be indexed. [Read more…]