I have a tendency to over analyse google analytics, SERPs and my highly original content but anyway, here is my latest observation. Write about any topic, using good English and words which are not commonly used in everyday speech but in their correct context and hey presto, see the website in which the article is published rise up SERPs. Do you think this observation is correct or is it down to something I haven't observed during over analysis? BTW, I wouldn't sell a 300 word article to anyone for less than £100...
I don't think your analysis is correct! Google will never use such thing for ranking site using uncommon words doesn't makes your site trustworthy!
Using words not commonly spoken in everyday discourse in their proper context can't effect trustworthiness and can only enhance content. Conversely, bad spelling (for example an article writer on DP advertised their "articlele writing service") smacks of untrustworthiness, jumping on bandwagon keywords, stupidity and no professionalism.
I don't see how or why it would 'reward' uncommon words. The semantic matching it uses analyses words that are commonly found in the same context, so it wouldn't know how to evaluate unusual words.
Pardon? Come again? Why is it amazing? What is amazing is that people offer $1 per article and even more amazing that people accept. They pay $1 and make $200 a year from the article. Ridiculous and so unfair. The only possible reason a person would sell an original 300 word article for a dollar is that they are desperate. After 2 years experimenting with article writing on various sites I now know how to write articles that make £100 a year and that with a 50% share of adsense revenue. I also know how to write short articles - 3 sentences/50 words that make a few dollars most months...
Well Google rates unique content better, which is a fact! So I guess if you use unusual words that are still proper English words, maybe just from a different time, your chance increases of having a unique content on your site, thus being rate higher in google. I doubt that google decided that the phrase "where art thou", is better than "where are you", it's just that its more rare.
I agree with webmasterforums, google wouldn't use this as anyone can run a spellchecker and go over grammar. Though, I also agree with 1associate that bad spelling can affect trustworthiness for the reader. The algorithm would be unable to tell whether or not the bad english was onpurpose or not. This would penalize someone say quoting some aweful spelling. Or the differences between english (US), english (UK), and english (internatonal). These would be indistinquishable to the algorithm so would penalize potentially good content. This kind of factor can only be judged by a human being.