Thank you for looking at this, Kay. My personal view would be that a bare link to a Space page, with no associated prose text, would not fall within the intended meaning of a summary; but if the link were embedded in a sentence it would be ok.
Neither "created through" nor "work in progress" is a summary. If either is present, it should be below the Biography heading.
Checking for tags that aren't recommended sounds a good idea (except perhaps on members' own profiles, if BioCheck can see them: I seem to remember more latitude is available there, as it is on free-space pages).