I guess min.us has built out their feature set a little more, and DropMocks was just a side project of Glen Murphey's (open source! https://github.com/glenmurphy/dropmocks ), but all the same it'd be more heartening for original ideas if it was DropMocks that was getting this press.
[edit: In fact min.us is built on DropMock's source, in accordance with its very permissive license but without acknowledgement and a little tactlessly in my opinion. http://www.reddit.com/r/reddit.com/comments/eailg/minus_code... ]