these are not just free domains these are faucets sites with paid hosting and also a-ads,coinmedia,my tweeter account,clickbank account adbit.co account on it .i am earning daily little amount of satoshi from here either i have not get yet any profit due to some bots but i am still working on this if you want to valid collateral i have a domain for sale capital4invest.biz worth of 1000$ want to sale