Wouldn't it be better to move the section concerning migration shorten to the content which only applies to wikispace specifically, create a global migration How-to page, move it there and put a link to this page here. So we don't have to write the same text for every wiki farm which has been shut down or will in the future?
Talk:Wikispaces
All of that section is specific to Wikispaces, except the one line with links to the two related generic topics. A global "So you want to switch to MediaWiki?" page would certainly be nice, not sure how much useful information it could contain though.
I guess, that might be helpful. From there we could link back to the other wiki farm's migration How to's in their own articles. So it works additionally like a kind of overview.
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