==NPOV==
The sentence  gives the false impression that reasonable minds consider it an acceptable practice.  The idea that quote stuffing is ever acceptable is one that departs significantly from the prevailing or mainstream view.    As WP:PROFRINGE notes,  "if the only statements about a fringe theory come from the inventors or promoters of that theory, then various "What Wikipedia is not" rules come into play."  Also we have blogs used as sources in the HFT voices section, but nothing from or even mentioning Nanex / Eric Scott Hunsader e.g. http://www.nanex.net/aqck2/4670.html (and http://www.nanex.net/aqck2/4594.html)?  (t•c)