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I just had a developer friend call me in a panic, because they had gone live with a new site and found out (the hard way) that they had missed some pages on their 301 redirects. So the pages are appearing in Google but serving 404s. Ouch! So their question was: other than running a report for 404 errors in something like Screaming Frog, is there a way to hunt down ONLY pages serving 404s, then export to CSV so they can be redirected? Anyone got any tricks up their sleeve?

Our MOZ crawl kept telling us we had duplicate page content even though our subdomains were redirected to our main site. (Pages from Wineracks.vigilantinc.com were 301 redirected to vigilantinc.com/wineracks.) Now, to solve that problem, we have removed the wineracks.vigilantinc.com subdomain. The error report is better, but now we have broken backlinks - thousands of them. Is this hurting us worse than the duplicate content problem?

Our client wants all his sites to be re-designed and perhaps consolidated into one domain. What are the dangers of using 301s on all his already ranking and established domains to their new forward-slash location? If there are some good articles that describe this exact issue please post a link.

Hi all, I'm working on an e-commerce site that sells products that may only be available for a certain period of time. Eg. A product may only be selling for 1 year and then be permanently out of stock. When a product goes out of stock, the page is removed from the site regardless of any links it may have gotten over time. I am trying to figure out the best way to handle these permanently out of stock pages. At the moment, the site is set up to return a 404 page for each of these products. There are currently 600 (and increasing) instances of this appearing on Google Webmasters. I have read that too many 404 errors may have a negative impact on your site, and so thought I might 301 redirect these URLs to a more appropriate page. However I've also read that too many 301 redirects may have a negative impact on your site. I foresee this to be an issue several years down the road when the site has thousands of expired products which will result in thousands of 404 errors or 301 redirects depending on which route I take. Which would be the better route? Is there a better solution?

212 are rel canonical and 176 are 301 permanent re-direct. An example of the re-direct is a change I made to the /trackback 302 status on my blog like; http://www.bluesunproperties.com/2012-spring-biker-rally-thunder-beach/trackback/ Are these Crawl Notices something that I should spend resources on, or should I focus more on my errors and warnings?

Hello - My company acquired another company in our industry and our IT team immediately set up the acquired companies domain name as a an alias to our site. This created a duplicate version of our website under another domain name and Google started ranking interior pages from the aliased acquired site for several top keywords that were previously held by our real site. Should we 301 redirect just the top level domain name of the acquired site to the real site or 301 redirect the top level domain name and the interior pages on the acquired site to help ensure that our real domain will take back the rankings it once had? Thanks!