This is neat. I was playing with the wiki API the other day comparing edits to IP addresses. I am unsure about how I feel, but alot of companies edit their own articles; and the edits usually stick. Monsanto practically wrote their own entry.
This project sounds somewhat relevant, though it doesn't really correlate the content of edits (it just groups the edits by organization): http://en.wikipedia.org/wiki/WikiScanner
I have found that the majority of edits appeared in the before time(pre 2010), and the amount of edits that stick are relatively low. On that note, I would also like to point out there are still ones that do. I have no issue with a company editing their page with updated information and what not, but I do have an issue with companies writing about them selves in a word-game kind of way; in the sense that certain words have different emotional impacts.
I guess this is one of the reasons I was never allowed to cite wikipedia.
