I will try to explain in English:
WikiScanner can track who is making changes to Wikipedia entries, and sometimes we find out that those people who are editing/changing the entries should not be doing that. Because there might be a conflict of interest. The example is that "Walmart had been changing the Wal-mart's wikipedia entries", and as a result making the entries objective, and even biased.
If we try again...
On Aug. 14 a computer hacker named Virgil Griffith unleashed a clever little program onto the Internet that he dubbed WikiScanner. It's a simple application that trolls through the records of Wikipedia, the publicly editable Web-based encyclopedia, and checks on who is making changes to which entries. Sometimes it's {those} people who shouldn't be {making changes to the entries}. For example, WikiScanner turned up evidence that somebody from Wal-Mart had punched up Wal-Mart's Wikipedia entry. Bad retail giant.
Hope this clears things up a bit.
提问者对于答案的评价:yes , this clears things up a bit.
but
not absolutely