Bleeding Cool is reporting that webcomic host/publisher Tapastic has added a “right of first refusal” clause to their Terms of Service:

If user desires to sell, license, exercise or otherwise dispose of, indirectly or directly, any rights or any interest in any content posted on the Platform (the “Offered Right”), then the user shall give written notice to Tapas Media of such desire. Commencing upon Tapas Media’s receipt of such notice there shall be a 30 day period in which user will negotiate in good faith with Tapas Media for Tapas Media’s acquisition of such offered rights. If by the end of 30 days no agreement has been reached or if at anytime Tapas Media declines interests in the offered rights, then the user shall be free to negotiate elsewhere with respect to such offered Right.

I suggest you take a close look at Tapastic’s updated languages and make your own decisions soon.