It seems that in this letter of Paul's the idea of giving to a ministry was on a more personal basis. The person who gave knew the person he was giving to. Sadly, in our big, big world that concept seems to have disappeared.
I much prefer to give to someone directly, someone whom I know and have seen the fruits of their ministry. The idea of giving does connect a person to a ministry, but it's important to know that ministry before entering into this type of communion.
Joyce