It should be dumped into a trust fund, an endowment that will fund some low level SETI in perpetuity. The goal should be to free SETI from having to worry about funding from one year to the next. Funding such projects needs to be measured in decades, not dollars.
Tax-exempt organizations need to spend 10% of their endowments every year in order to keep their status, pretty much for this reason (avoiding perpetuities).
