On 14/11/13 22:51, Daniel Friesen wrote:
Unfortunately I don't know of any actual statistical test anyone's done comparing the amout of spam made on a wiki with and without nofollow. Or other anti-spam tools.
I couldn't find any useful statistics after a bit of web searching. It would be interesting to set up two wikis, and get one of them listed on "dofollow" lists such as these:
http://www.blackhatlists.com/view-item/52/352-DoFollow-Wikis-List.html http://www.milanchymcak.com/blog/fresh-dofollow-wiki-list-download-updated-dofollow-wiki-list-for-free http://www.blackhatgroup.com/f8/%5Bget%5D-list-do-follow-wiki-sites-105103.html
... and leave the other one off them, and see which gets more spam. I gather the actual spambots are stupid and wouldn't notice whether the wiki actually has nofollow enabled, but getting a wiki included on these crawler-generated lists may have some impact.
-- Tim Starling