Board Thread:New Features/@comment-5275700-20150722200934/@comment-1279279-20150731152732

Some 'captchas fight back' (including on commercial websites).

There needs to be more formal analysis (in both senses) of the issue, rather than 'in my experience' and 'generic remarks and assumptions.'

Those wikis which require signing in under a variant of the user's actual name for legal/technical/commercial and other reasons should be excluded, but 'those requiring a user name (not necessarily the user's actual own)' could be.

We can all think of 'a number of positive or neutral reasons' why some people will not wish to sign in (most of which have been listed above).

Of those wikis which allow editing by IPs how many have serious problems with negative IP input (apart from the 'great spam attack on Wikia' of a few years ago), for how many is it an occasional issue/confined to a few particular topics, and for how many is it 'not really a problem'? To what extent is there a category of wikis/wiki subject problem, and how does it relate to the general level of activity on the wiki?