Worst part about the quality of data is that corporate frauds engaging in pump and dumps are now using this information to convince shareholders that short sellers are driving the market own when they are the sellers selling paper and having the trades marked short because they paper hasn't cleared.
Spongetech is a perfect example of this where the short volume on a daily basis is huge but the FTD's and bi-monthly short interest reports don't support the daily short volume numbers. while this implies that it is not massively shorted, some foolish investors have opined otherwise because they do not understand the information.
On Feb 26, 2010 SPNG was shorted 43% of the total trade volume while the average of 2310 OTCBB and Pink sheet companies was 46%. Somehow SPNG shareholders want to believe that their stock is under attack when they are trading below average short positions based on the data. When this is pointed out investors run from the raw data that makes up this number.
The point I am trying to make.