I am such a grammar nerd. 9/10 -- I don't follow any Twitter hashtags of any sort (#7), but I am totally mortified by on-line errors that I make (#5).
EDIT: I don't care about correcting anyone's Facebook pages (#2), but I do stop reading when I can't get past the writing errors - same on hubski.
Re #4: I don't actually correct public signs (at least not anymore) but I sure would like to.
I would add a #11: I like people to tell me when I make writing errors, so that I can correct them.
I think the original writer of the poster might have accidentally inserted the double negative ("not" and "exclusive") because the original writer is not a grammar nerd. I'd say that generally compelling writing and correctness might be mutually exclusive -- but only to those people who have a sense of "correctness" and care about it. When does so-called correctness really matter? Most student writing that I have to read might be technically correct but tedious and over-stated. I believe that generally the more you perfect the form, the more you perfect the content -- but perfection is a point on a continuum with unclear end points.
Don't you find that style often supersedes text book grammatical correctness? Form conveys content that is sometimes additive to the words themselves; subtext, perhaps, that can only be conveyed through the author's unique description. This, however, is often not given over to putting one's commas, periods, conjunctions, and prepositions in the pre-agreed upon places. (And notice the Oxford comma, which I am quite fond of! [Or, "of which I am quite fond," if we're being huge nerds.])
We can't hold on too firmly to any notion of textbook grammatical correctness. Whose textbook? Whose grammar? I would ignore any rule of grammar if the style moves me to connect with the author. So-called correct grammar often leads us into contortions, such as "of which I am quite fond." I believe there is a movement afoot to let the preposition rest at the end of many sentences. By the way, if you are a writer of research papers, are you now allowed to use first person or do academic journals still force you to contort into a third person voice? There is a movement afoot to reclaim the first person.
My "default" writing is with proper grammar and spelling, but I usually match my writing style to the person I'm messaging, in the same way that my accent and vocabulary naturally change dependent on whom I'm speaking to. So, most of my Facebook conversations lack appropriate capitalisation and punctuation. I find it interesting that everything in the image above is capitalised, with the exception of "Grammar Nerd".
#2 makes you an obnoxious douchebag. No one likes being corrected. I try to correct my nearest and dearest the least. It may drive me mad, but no one likes being corrected, even if they tell you to do it. #5. Mortification over a simple error? Not my style. Yes I know better. I also know better than to allow minor missteps to mortify me. #7. No. Bitch I ain't followin' SHIT on facebook. The rest I mostly agree with. My current dead horse concerns the correct use of "amount" vs. "number." I beat it on Reddit. No one appreciates it. That's cool. Edit: I'm clearly an irritable grammar bitch today. Work has not been kind. Nor has my body.