imagine a cleaner/maid works in america and gets paid dollars. to send that to the Philippines. the intermediary needs to put it into a bank account and exchange it from dollars and into Philippine peso's. which is very cumbersome and costly to do on forex markets, and also very slow to deposit and withdrawbetween a US bank and a filopino bank. thats why western union usually keeps reserves and alot of databases to keep the balances of each office straight.
meaning not only large forex fee's bt the admin and security costs of looking after funds.

yet by utilizing bitcoin, anyone.. yes anyone can go to localbitcoins, sell the dollars for bitcoins. email the privkey to relatives in the Philippines and those relatives find a Filipino localbitcoin trader to swap bitcoins into Philippine peso's the same day.. with alot less fee's and delays or admin work.

bitshark seem to be doing this second scenario, avoiding the complex red tape of forex markets. and also professionalizing the localbitcoin swaps at both ends by hiding the 3 step process behind their own gateway..

i have not used bitshark but i see the positives of the business plan. but id ask everyone to do their due diligence and check they are a registered company etc before trusting them with funds.. and that goes for any business