ddrinnon,
We sincerely apologize for the inconvenience this may have caused. We have addressed the issue with the main ConceptShare website and it should be responding appropriately now. Should you experience any other problems please don't hesitate to let us know.
It should be noted that this problem did not affect the ConceptShare application itself, just the main site login and sign up pages. If you ever want to access your account login and bypass the main ConceptShare website you can do so by pointing your browsers to your account's domain.
I.E.
http://yourdomain.conceptshare.com
Thank-you for bringing this to our attention.