I'd like to run this past some of you guys before going ahead with this plan! One of my wordpress sites I've had since january is generating $700-$800 a month through adsense and affiliate sales. Without giving away too much info, I KNOW I can achieve more in affiliate sales if I change my content over to a new wordpress plugin to handle listings better... Problem is, if I'm to do this the sites page URLs and structure will change... roughly 100-150 pages. How would you go about the move? a) just add the item listings in the new system and have 150 extra pages with duplicate content? b) add the items and 301 redirect 150 pages to their new location? c) drip feed adding the new items and run both systems side by side slowly until all items are migrated. 301 every item to its new location? I'm certain option C is the best way to go and in THEORY I shouldn't loose any rankings (site is ranked extremely well). I'm slightly nervous with this idea as its "make or break" on my main money site, any suggestions would be much appreciated.