This week, Rand discusses what you should consider when moving your site.
Verify your old site AND your new site
Verify at Webmaster Central, Yahoo! Site Explorer and the Live tools. Do this before you 301 everything, or it will get tricky.
Analyse your current traffic and rankings
Figure out where you’re ranking at a bunch of search engines, so you can compare this after your move.
Make the 301 magic happen
Write rules, don’t be generic. If you have a massive, complicated site, take the top performing pages and redirect just them – you may not have to worry about the rest.
Analyse results and grow/change external links
Tell people who have linked to you, let them know you’ve moved and ask them to change their link.