AP,
I started my blog http://www.app2us.com/blog on wordpress with default options for the permalink.
Example: http://app2us.com/blog/?p=63
I read that having descriptive URLs is better for search rankings. I want to change the permalink option to date and name based, like
http://app2us.com/blog/2008/04/21/sample-post/
When I try that, the links to my old posts change, but the posts themselves remain available at the old URL, causing 'page not folund'.
Even if they changed properly I will lose my existing search rankings and users will hit non-existent pages through Google Cache.
What is the best way forward?
Thanks,
app2usadvisor