Its not honestly profitable if you going to use them there are still asking for huge fee just like before and never change even the default fee are changing from
https://bitcoinfees.21.co/ so those advertising company are gaining more profit because of the fee and i think they take few fees from faucet owners and pay only small fee for every withdraw.
Just like a-ads.. that is why i stop blogging and use them because of transaction fees..
That is why i posted mostly an offer which is paying only for every sale or every leads that related to my blog or website..
Much better to save them and if you earn from adbit.biz a lot before you withdraw your earnings there so that you are not wasting the fee for every transaction.