conflict rates belonged to the articles George. 157 In addition to the point-for-point disagreement between these two parties, others have examined the sample size and selection method used in the Nature effort, and suggested a "flawed study design" (in Nature 's manual selection of articles. 159 Concerns have been raised by PC World in 2009 regarding the lack of accountability that results from users' anonymity, 160 the insertion of false information, 161 vandalism, and similar problems. Scherer and David Ross. West, Andrew.; Chang, Jian; Venkatasubramanian, Krishna; Sokolsky, Oleg; Lee, Insup (2011). Salt Lake City Weekly.