Gambling- based keywords dominate an updated list of UK market’s paid search words with highest prices, which are interestingly misspelled in many cases. Search Engine Watch’s “100 most expensive keywords in the UK” list  based on  SEMrush data of 12m keywords and their average costs on Google AdWords for last March was published this Thursday. The most expensive key phrase for last March is “play live blackjack” with the prize of £148.51 per click. Moreover, all the top 10 places in…