Why 5k? Because a retracement line passes somewhere along that point? We have defended 6k twice already and there are no negative news that would trigger a panic sell. If a low volume bleeding continues you can be sure that we'll bounce back of 6000 USD again. Only another huge selloff like the one from the Gox trustee could break the support and he said that he isn't going to sell low like that and is going to wait for ~10k.