canuckseo - 4:41 pm on Mar 20, 2013 (gmt 0)
I switched my sites to responsive a few months ago. It didn't have a positive impact on SEO but it wasn't negative either - more status quo.
I saw a 2-3 day slight drop in rankings in Google until it adjusted to the new layout.
I did this because my mobile traffic was increasing and after research determined that the responsive layout was the way to go (as opposed to a mobile only version of the site).
The thing I love about responsive is that my sites look normal no matter whether i look at them on my computer, my phones or my tablets (2 different screen sizes). I also have a blog that has a mobile version of the site (not responsive) and while it looks fine on the smart phone screen it looks crappy on the tablets.
I noticed my mobile traffic had been increasing the previous months. When I hit about 12-15% of total traffic I made the switch to responsive on my main domains and my mobile traffic has increased. Is that because google recognized my responsive design and decided to give me more referrals? Hard to say since my mobile traffic had been steadily increasing beforehand. But my feeling is I did get a slight preference in Google mobile searches because of it.
The other reason for switching is that I do expect having a responsive site WILL be a ranking factor (if it's not already) later this year.
FYI the sites I switched are Wordpress sites - one uses a customized version of the "responsive" theme while the other users a different named, but still responsive theme. The theme choice has not made a difference either.