http://stripcreator.wikispaces.com/
Apparently this happened back in September and it took until now for somebody to notice.
http://blog.wikispaces.com/2014/09/wikispaces-is-no-longer-offering-free-non-education-wikis.html
Possible courses of action:
1) Just remove the link.
2) Pay for a subscription... you know... with all of that ad revenue.
3) Try to convince Wikispaces that Stripcreator is an educational site. This won't work but it might be funny. We do have a lot of people doing homework comics on here, right?
4) Find another wiki provider that is free.
5) Set up a wiki on this site.
6) Ignore it entirely; go get drunk.
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The what mentioned above is total fiction. Please don't take it seriously!