They are all shit coins but you do able to receive some coins which do have good value in the market but of course you will get some peanuts and it isnt really worth to waste your time on claiming.

But somehow there were free coins that do actually being pumped where you can make out some money out of those free claims.So far back in my yobit experience i havent able to be on that situation.
So final answer is definite 'NO, it wont be worth of your time'  and better find another alternative ways for you to earn instead.