providing temporary use of a web-based software application that provides a visual illustration as well as a numerical calculation of the benefits of a gift to charity through a user-friendly interface that allows site visitors to run calculations on up to nine gift types, namely, outright gift, charitable gift annuity, deferred charitable gift annuity, charitable remainder unitrust, charitable remainder annuity trust, bargain sale, retained life estate, charitable lead annuity trust and charitable lead unitrust, emphasizing deferred or estate gifts which come to fruition at the death of the donor, and some of the gift vehicles represented also provide lifetime income to the donor, and the tool allows users to manipulate various inputs which are used in calculating possible benefits such as payment rates and charitable income tax deductions