Food stamps are pumping up revenue at retailers across the country. Costco (COST), Wal-Mart (WMT) and others are seeing rushes an hour before funds are credited to electronic benefits transfer cards. Wal-Mart's CFO, Tom Schoewe, has noted the trend, telling Reuters, "Once the clock strikes midnight [on the last day of the month] and EBT cards are charged, you can see our results start to tick up."

Spending via EBT is not only increasing, it generally happens quickly. JPMorgan (JPM), which runs EBT programs for more than 20 states, reports that buyers run through 85% of food stamp funds within the first three days of their availability.

Notwithstanding the 9.7% unemployment rate, families who have some "earned income" are turning to food stamps.

Why is this happening and how widespread is the problem?

There are two main reasons forcing families to take food stamps. First, the average work week has dropped to 33 hours per week. Secondly, the number of part-time workers has increased more than 50% in the past year.

In a distinctly depressing sign of the times, BJ's Wholesale Club, Inc. (NYSE: BJ) announced today that it will begin accepting food stamps as payment at all 180 of its retail locations. Food-stamp payments will be processed through the Electronic Benefit Transfer (EBT) system.

"BJ's recognizes the diverse financial status and changing needs of its members," commented president and CEO Laura Sen in a statement. "We are proud to help members stretch their food budgets by offering savings on a large selection of fresh fruits, vegetables, meats and baked goods, along with name-brand, non-perishable staples."

How will President Obama's $825 billion plan to stimulate the economy work? It looks like it will create jobs for the people working on the projects. But how long will those jobs last and will they continue after the projects are over? And if there's something wrong with his plan, what would be a better alternative? I think that if these projects are investments that create revenue generating operations, they are worth doing -- especially if those revenues ultimately recoup the investment.

Here are some of the specific plan elements that I view as investments:

• Boost renewable energy supply. The plan seeks to double renewable energy generating capacity of over three years -- to power six million American homes. It would upgrade two million homes and 75% of all federal buildings to better protect against the heat and cold -- saving low-income homeowners $350 a year in utility costs and cutting government costs by $2 billion a year. It would also provide loan guarantees to boost the $100 billion in private sector investment in clean energy projects over three years.
• Upgrade 3,000 miles of transmission lines for a national electric grid to make more efficient use of energy.
• Build 1,300 waste-water projects which would provide an ongoing revenue source for cities and states and reduce the costs of cleaning up polluted water.