If the authors have genuinely copied CSS and icons (I haven't checked) then I would expect Trello Inc. to pursue the authors for copyright infringement (justifiably).
The point is to be very precise with the criticism. Is the work stolen (protected by copyright law) or is it just a convincing clone?
The point is to be very precise with the criticism. Is the work stolen (protected by copyright law) or is it just a convincing clone?