What's up with these "I made ___ in ___ hours/days" posts
avner: I really don't see why someone shouldn't showcase something they hacked together, regardless of the time it took to materialize. Granted that the "in X hours" part may reflect the hacker having some other agenda (as highlighted in your post); at the end of the day however, like you said, if whatever it is that they are showing off holds any commendable merit it will be recognized by the community. Anything else will die down after a couple of upvotes anyway.