[ronaldx]

> counter this by running all my posts through Google Translate.

This is smart, except... Google presumably records your translations, likely linking them with your Google account (and - even if not - could easily look up which translations led to your blog).

So, textual analysis is not quite dead, and you may have given away your anonymity by taking this measure.

[Sir_Cmpwn]

What if, instead, you limited yourself to some number of the most common English words?

[tbirdz]

One idea might be to spell check your writing using a modified English (simple) dictionary. This modified dictionary would only contain the most common and simplest english word, allowing you to easily prune out words that would reveal your fluency in the language.