The one that comes up best is Hakia (pity you didn't put that at the top of your list, Nick give it some more publicity).

Hakia bills itself as a 'semantic search' engine that understands more about what the user is looking for. The Hakia results served up for 'Michael Jackson Died' are definitely more relevant than the other search engines referenced above. Hakia note the existence of Michael Jackson the writer, but seperate this off into a top section with the label 'would you consider this answer?' Impressive.

I also like his skill at tracking down the source of some of the confusion – Wikipedia who, since 2007, has had the exact phrase in an article referencing the 'other' Michael Jackson.  

Indeed Wikirank shows that visits to the profile of Michael Jackson the writer increased by 31,995% on June 25th. This 'other Michael Jackson' Wikipedia profile was visited 83,134 times on 25th June – even though it has nothing to do with the King Of Pop. 

However, the real answer to the search string could be provided by "real-time" search.  The Online Marketing blog summarises this in the context of the Iran + Electrion search string.  This is a small holy grail that has been on the cards for a while. Take a read of OneRiot's nice summary (although it is a rather a strong sales pitch for his work).

But the 'rumours' of the internet activity spikes causing Google news to think it was under attack by malware are more entertaining…. and Alan Patrick has a good graph summarising the reasons for the 'attack' – this really made me smile!

And of course this has clear implications for your own company / brand / name.  Check yourself out on all the search engines Nick lists for obvious search phrases and see which one 'finds' you.  If not, back to the SEO drawing board to refine the natural search phrases.

Thanks for a great insight, Nick and starting my researches into this great topic.