It should be noted that they had Brimah as a mid 1st round pick after the 40 point game against Coppin State, and then after his 0 point, 1 rebound effort against Duke and a few other no shows against other top 40 teams, he dropped off the board. But now he is back on as a early 2nd rounder, likely due to his shot block surge at the end of the season.
It demonstrates the stock market-like quality of the mock drafts, but it doesn't mean they should be ignored. If that were true then stock investors would pay no attention to the Dow Jones Industrial average. These boards have to be watched, not just for entertainment, but also to get a reasonable feel as to what the scouting community is thinking based on current information.
Is the guy who compiles NBADraft.Net a Jimmy The Greek wannabe sitting in a dingy basement in front of a computer with a cigar in one hand, a bottle of scotch on the table, a portrait of Jimmy the Greek on the wall and an Associates Degree in English from Phoenix University hanging crookedly on the wall behind his computer, as Blades suggests? We can only use our imaginations on this one. I picture a younger Adam Schechter or Andy Katz type of character involved in the operation of this site. Guys like that are top flight reporters who generally get good information from good contacts. I do think Schechter went way too far posting the medical records of Jason Pierre-Paul of the NY Giants on the Internet, but it shows that these guys are able to get information from the people who know something. I think NBADrat.Net's operator may be that character in the basement but it seems like he knows people,like Schechter and Katz know people. For all we know it could be Katz or Fran Fraschilla that is running that site.