How can I merge two sites?

Rob from The Netherlands asks: “Can the “Change of address” feature in Google Webmaster Tools be used to merge two websites (Site B becomes a part of Site A), or is its use limited to moving a site from one domain to another? Do you have any advice for successfully merging sites?” Thisvideo is part of a “Grab Bag” series in which Matt Cutts, head of Google’s webspam team, answers questions from webmasters. We’re not currently taking new video questions, so your best bet for getting an answer about webmaster-related search issues is to head to our help forum: www.google.com