Msg#: 4388712 posted 1:10 am on Nov 19, 2011 (gmt 0)
Large site changes generally result in a lost of traffic... if for no other reason than it takes time for the new structure to percolate through the search engines. Secondly, if others had linked using the original structure, there are a lot of broken links... unless you provided 301 redirects to the new uris...
Msg#: 4388712 posted 8:03 am on Nov 20, 2011 (gmt 0)
google has always been somewhat opaque about how they handle subdomains vs sudirectories but it appears they are now treating subdomains more like subdirectories especially when it "looks like" it should be. i would only use subdirectories when you essentially have a standalone site or for technical reasons.
Msg#: 4388712 posted 6:50 pm on Nov 21, 2011 (gmt 0)
I moved it back, be careful!
I got a big hit from Yahoo and Bing too, lost about 50% of my traffic from these. Seems that they're unable to handle 301 redirects properly or at least there must be a big delay between re-indexing + getting your rank back on redirected pages.