That's not really a correct conclusion to draw from her data. She's talking about the number of words, not posts. Technically speaking, her study produced data supporting a possible conclusion that bloggers want to signal to observers that they find wordy blogs more attractive. No more, no less.
In protest of this lazy journalism, I am going to post the ten hundred-letter thunderwords that appear in James Joyce's polyglot practical joke/diary of insanity
bababadalgharaghtakamminarronnkonnbronntonnerronntuonnthunntrovarrhounawnskawntoohoohoordenenthurnuk,Perkodhuskurunbarggruauyagokgorlayorgromgremmitghundhurthrumathunaradidillifaititillibumullunukkunun,klikkaklakkaklaskaklopatzklatschabattacreppycrottygraddaghsemmihsammihnouithappluddyappladdypkonpkot,Bladyughfoulmoecklenburgwhurawhorascortastrumpapornanennykocksapastippatappatupperstrippuckputtanach,Thingcrooklyexineverypasturesixdixlikencehimaroundhersthemaggerbykinkinkankanwithdownmindlookingated,Lukkedoerendunandurraskewdylooshoofermoyportertooryzooysphalnabortansporthaokansakroidverjkapakkapuk,Bothallchoractorschumminaroundgansumuminarumdrumstrumtruminahumptadumpwaultopoofoolooderamaunsturnup,Pappappapparrassannuaragheallachnatullaghmonganmacmacmacwhackfalltherdebblenonthedubblandaddydoodled,husstenhasstencaffincoffintussemtossemdamandamnacosaghcusaghhobixhatouxpeswchbechoscashlcarcarcaract,Ullhodturdenweirmudgaardgringnirurdrmolnirfenrirlukkilokkibaugimandodrrerinsurtkrinmgernrackinarockar.
Take that, Icelandic volcano. Jerk.