“...Netherworld seo'ers and marketers would easily be able to use this to their own advantage methinks, using most of their old techniques in newer ways. For instance, linking one site to another, using RDFa.
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I don't doubt Semantic search will eradicate web spam, as you say web spam will evolve. How Google deals with this I guess could be the next big battleground.
“For instant - Lets have an example of blog, like where you talk about challenges of small businesses, problem areas they encounter for being online etc...
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Don't forget we are at the beginning of the journey. But currently, if you have a blog that talks about the challenges of small business, how do you get on to page 1? How do you compete with the likes of business.com or entreprenuer.com or the multitude of other small business advice sites/forums/blogs.
Now how about if you are deemed to be a respected/knowledgeable small business expert? If a
Google Carousel panel made up of article summaries from various respected small business websites has replaced the traditional search index, then it's down to how the user interprets the summaries and decides where to go, hopefully your site.
Now how you get summaries into the Google knowledge graph via schema.org other than a site description, I've yet to work out, and who decides if you are a knowledgeable expert? I suspect this will be powered from Google+ profiles, and community participation, but thats just a bit of cynical speculation.
As for all the other problems, I'm guessing the babel one is probably the hardest although Google Translate does seem to do a better job than earlier attempts.
I suspect we are in for a long and interesting journey
