There are two cases that concern me a lot because of the characteristics exhibited by the main editors involved.
Maoririder, whose case is before the arbitration comittee and is still in the evidence phase, is not an obvious vandal or troll. He has made large numbers of vanishingly small stubs, some of which have grown into very impressive articles, and also asked intriguing, childlike, questions in an appropriate forum.
Wiki brah, who has been subjected to many blocks from his earliest appearance in mid-August, has written articles that have been identified as "nonsense" by RC patrollers, but a discussion with fellow administrators they tended to the opinion that the articles were acceptable newbie stubs and did not merit the vandalism warnings that they provoked:
06:56, 14 August 2005 Lucky 6.9 deleted "Keyboard dust bag" (content was: 'You might have seen this little dillio at the automatic repair garage or any other place where typist have dirty or greazy hands. This is the thin ty...' (and the only contributor was 'Wiki brah'))
06:55, 14 August 2005 Lucky 6.9 deleted "Cellshell" (content was: 'this is that colored plastic pice that fits over your cell pohne. It changed its colors, see? These things are not all that populbar anymore with th...' (and the only contributor was 'Wiki brah'))
06:50, 14 August 2005 Lucky 6.9 deleted "Altimeter calibration knob" (content was: 'THIS is the small dial or knob on the console of an airplane that lets you adjust the altimeter to set the barometric pressure that is cruical to the ...' (and the only contributor was 'Wiki brah'))
For some time I have had a strong suspicion that Maoririder may be autistic. Wiki brah's contributions also fit the pattern.
The above reminds me of an early response to Maoririder:
http://en.wikipedia.org/w/index.php?title=User_talk:Maoririder&diff=1973...
"Those "bloody-nosed beetle" and "big-eyed bug" nanostubs are tantamount to vandalism. If you'd like to experiment, please use the [[Wikipedia:Sandbox|sandbox]]. Thanks."
While the stubs in question were indeed tiny, they were hardly vandalism.
Big-eyed bug, for instance, read as follows:
It is a type of bug.
Template:Bug-stub
Today Wikipedia has coverage for both of those insects, mainly thanks to Maoririder's stubs and the good faith expansions performed by other editors.
http://en.wikipedia.org/wiki/Bloody-nosed_Beetle
http://en.wikipedia.org/wiki/Big-eyed_bug
Another of Maoririder's stubs was Portland High School. Later moved to "Portland High School, Portland Maine" Maoririder's original stub read:
It is located in Portland, Maine
Template:Maine-stub
The article was listed on AfD four days after its creation. The article was expanded--the school, founded in 1821, turned out to be one of the first public high schools founded in the United States after the Revolution, and the article was expanded in a few minutes and, via a premature speedy delete or two, the result of the debate was keep, with only one vote to delete.
Both Maoririder and Wiki brah have been labelled, variously, trolls and vandals, although I do not see strong evidence to support either label.
Both of them have expressed a strong wish to produce work for Wikipedia. Both of them produce articles that appear weird to non-autists. In my opinion, neither represents a threat to Wikipedia commensurate to the treatment they have received.
Should the world's first encyclopedia that anyone can edit continue knowingly to alienate, abuse and reject autists?