Dr. Peter J. Meyers wrote an excellent piece on Moz.com that deals with changing multiple domains, basically 5 into 1 for this case study. The article is very detailed and is definitely something you want to bookmark in case there ever comes a time when you need to do this.
From the article:
People often ask me if they should change domain names, and I always shudder just a little. Changing domains is a huge, risky undertaking, and too many people rush into it seeing only the imaginary upside. The success of the change also depends wildly on the details, and it’s not the kind of question anyone should be asking casually on social media.
Recently, I decided that it was time to find a new permanent home for my personal and professional blogs, which had gradually spread out over 5 domains. I also felt my main domain was no longer relevant to my current situation, and it was time for a change. So, ultimately I ended up with a scenario that looked like this:
The top three sites were active, with UserEffect.com being my former consulting site and blog (and relatively well-trafficked). The bottom two sites were both inactive and were both essentially gag sites. My one-pager, AreYouARealDoctor.com, did previously rank well for “are you a real doctor”, so I wanted to try to recapture that.
I started migrating the 5 sites in mid-January, and I’ve been tracking the results. I thought it would be useful to see how this kind of change plays out, in all of the gory details. As it turns out, nothing is ever quite “textbook” when it comes to technical SEO.
Read the full article on MOZ
Christopher Hoffman Laursen from European Domain Centre, left a comment, he pointed out he put together an infographic on the 15 steps to take to keep your Google ranking.
