As far my knowledge there is lots of sites are getting business because of bitcoin like faucets ,PTC , and games which will be having huge payout of small micro earnings to the customer.Is these websites and apps affected because of high transaction charges??
sadly this is true, and i hope things change in the future.
but all of these micro earning sites can still function with some workarounds. for example the a-ads, which is a banner advertising network used to pay each 0.0001
BTC but now they are paying each 0.001
BTC and it can simply be more. when the earning accumulates to a decent high amount and also paying in bulk, meaning paying 100 users at the same time in one transaction always helps too.