Well, you can't buy a person, so the next best thing was to buy Mike Grehan's company Smart Interactive. Andy Beal, from Keyword Ranking, released this information at his blog, Search Engine Lowdown. Andy says:
WebSourced today announced our continued growth and expansion will take us further and deeper into Europe. We're extremely delighted to bring Smart Interactive on board and assist them in their growth in the UK. Oh and you may be familiar with Smart's Managing Director, a charming chap by the name of Mike Grehan. ;-)
We're extremely excited to have Mike join us and are 100% committed to establishing a true presence (that means offices, staff etc) in the UK and Europe.
Mike is one of the most recognized individuals in the SEM industry, so this is not a bad move on Keyword Ranking's part. They have "assimilated" many well known names to the company in the past, but this one is by far the biggest.
Forum discussion at Cre8asite, where Kim posted a new thread named Mike Grehan has been assimiliated by WebSourced. Hence the reason I used the word "assimilated" above.