Original sentence: Also a few companies that have expressed personal threats towards ROR's owner have been deprived from writing (further) rebuttals, leading to increase of frustration.ROR's high rankings in the Internet search engines lead to  frustration by companies who feel they are being victimized by complaints that may or may not have any merit.Rip-off Report allows consumers to post complaints anonymously.The mentioned companies are allowed to post rebuttals
Edited sentence: Any business with a large number of customers may wind up on the site.It is extremely easy for consumers to post complaints anonymously.Since Ripoff Report enjoys high rankings in the search engines, the effect on a business can be very extreme, as searches on the company name pull up the negative report.This has led to some understandable frustration by companies who feel they are being victimized by complaints that may or may not have any merit