Checking one site, that I presume is still using “default” (because of the company_short_name bits):
User contributions are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Without limiting any of those representations or warranties, company_short_name has the right (though not the obligation) to, in company_short_name’s sole discretion (i) refuse or remove any content that, in company_short_name’s reasonable opinion, violates any company_short_name policy or is in any way harmful or objectionable, or (ii) terminate or deny access to and use of the Website to any individual or entity for any reason, in company_short_name’s sole discretion. company_short_name will have no obligation to provide a refund of any amounts previously paid.
Only the first sentence is relevant for the “clone” case". But it does limit clones to non-commercial use. Deed - Attribution-NonCommercial-ShareAlike 3.0 Unported - Creative Commons