This may seem silly but it’s true – donuts are a great way to test the law of diminishing returns. As a brief refresher from your school days, the law of diminishing returns states that at some point, each additional “unit” yields lower returns. In other words, you get less out of it than you put into it.

I know that at some point you’ve had your favorite gadget or appliance brake and you are left with the conundrum – Do I repair it or do I replace it?

Typically, I write about how to save money or avoid the temptation to indulge. I, at times, have chastened friends for their unnecessary expenditures. Today, I want to express quite the opposite.

When I got the good news that I had an interview with Oxford’s MBA program in New York City, I immediately went into how-do-I-spend-as-little-as-possible mode. Here’s a break down of how I was able to only spend $77.31 flying across the country.

Halloween can definitely get expensive after buying decorations, costumes for the whole family, food for parties and treats for the trick-or-treaters. Personally, I’d like to celebrate holidays in a less expensive style.

One of the advantages that I’ve found to social media is the ability to save money. For example, I saved 15% off my entire American Eagle purchase over the weekend all because of Foursquare.

One of the expense categories where my wife and I struggle the most is dining out. And I imagine that we are not the only ones. So here are some tips that we have found to be helpful.

If you have kids and are much of a Dr. Seuss fan, then you’ve probably read Dr. Seuss’s Sleep Book. We were reading it to our two little girls a few nights and I suddenly realized that Dr. Seuss was a financial guy too.

Unfortunately, we as Americans decided some time ago that instead of taste, nutrition, and health we wanted cheap food, a long shelf life, and fast preparation.

Groupon, along with a host of other start-ups, offers fantastic deals on local fare, services, accommodations, etc. All you have to do is sign-up for the daily emails or download the app.

An interesting infographic showing how losing weight leads to saving money. So knock off both your saving money and losing weight New Year’s goals with one stone.

In order to recoup huge investments in expensive aircraft and infrastructure, unbundling fares and charging for individual services allows airlines to make more money and stay in business.