I don't see a TOS page on the site. Where is its (corporation?) owner domiciled? I can appreciate the hustle of bootstrapping a site, but how can anyone know the site has appropriate redistribution agreements in place with those exchanges? Can you cite feed and/or entitlement names that you are redistributing from NASDAQ for example? I wouldn't want to invest time writing against an API that could get shutdown without warning due to misuse of an upstream source.