As far as I remember, Google Panda/Penguin is supposed to penalize sites that get a lot of unnatural links within a short period of time. So, in the interest of participants, organizers and clients, I request Indiblogger to make 'No-Follow' links the default for future contests.
But since I do not follow the SEO industry any longer, things might have changed. What do others think about this? Since the contests do not mention do-follow links, do you think our entries will be accepted if we give no-follow links?