OT: wiki hosting

[Mord Behar]

Does anybody have any experience with free (ad-supported) wiki hosting?
Looking on https://www.mediawiki.org/wiki/Hosting_services I see that there
is a large selection of possibilities. Has anybody used any of these? Heard
about any of them?
I know that an alternative is to buy some cheap web hosting and do it
there, but it seems a waste if all I want is a wiki...
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