Simsi - 8:17 pm on Oct 6, 2012 (gmt 0)
incrediBill - what people need when mobile may often vary wildly from what they need when sitting at a desktop
I totally subscribe to this. When many people talk about mobile they are thinking "devices" when they should be thinking "location".
When you are on the move you more often have less time so you generally want answers to questions or quick information. This is where Google's "Knowledge Engine" dream and Apple's Siri chick fit in IMO. I would also hazard a guess that more mobile searches are likely to be questions or queries that require one answer.
At home though, how many searches are direct questions and how often do you only want one answer or one result? You have a bigger screen, easier keyboard and most importantly, more time. Most times in this location when I hit Google, I want multiple opinions/options to explore and a much lower percentage of my Google searches are direct questions.
I don't see Siri as useful at home either - much for the same reasons as above and also because many people will feel self conscious talking to themselves or will be told to stfu while the TV's on!
You could argue, based on the above, that SEO will diverge over time but there is a two-pronged attack option: the long-term future of "SEO" in my opinion is learning how to be regarded as an authority on a given subject. Simple as that.