I use it to change my founds from exchanges. For example:
Problem:
You have 0.01 bitcoin in Kucoin and need to send your founds fast and cheap to bittrex.
Solution:
Changing Bitcoin to Digibyte with 0.1 % fee and sending it to bittrex with less than 1 Digibyte fee. Your bittrex account has the money inside for this cost ---> 0.1% + ( 1digibyte cost maybe 350 satoshis ).
And now you can sell your Dgb for Btc in bittrex for a low fee cost of transaction.
Conclussion:
Estimated amount of bitcoin in your account in bittrex ? 0.00995
This is a low cost to transfer founds avoiding hard fees
Estimated cost in this case ?
0.00005 bitcoin = 5.000 satoshis.