The phrase “put your money where your mouth is”  has been coming up a lot here lately—in part due to our work with New Resource Bank, which lets sustainability-minded businesses, nonprofits, and individuals do just that, and in part due to our decision to join 1% for the Planet.

If you’re not familiar with it, 1% for the Planet is an alliance of businesses of all sizes that commit to give one percent of their yearly revenues to environmental nonprofits. And the organization holds members to it–you have to submit tax documents and proof of donations to maintain membership.

We’d been thinking of doing this since learning of 1% via a Fast Company interview with Patagonia founder Yvon Chouinard, who co-founded the organization with Craig Mathews, fisherman and owner of Blue Ribbon Flies. What finally kicked us into gear was hearing Hunter Lovins give her “The Business Case for Sustainability” speech at New Resource’s bimonthly speaker/networking event, re:think.

Lovins includes an apt quote from Interface chair Ray Anderson: “What’s the business case for destroying the planet?” But what really got to us was her parting question, “What are you doing?” Somehow, “helping sustainable businesses and environmental nonprofits” didn’t sound like enough. So here’s another chip on the table.

Try it—it feels good.

A recent piece in the New York Times reveals that living green is driving couples into therapy when one half of the couple is greener than the other. One partner might sneak unsustainably produced meals, set the thermostat too high or drive too much—chiding and guilt ensue. If it goes on long enough, the happy couple is no longer happy. Even families are tense as greener children clash with their not-so-green parents.

This seems a bit ridiculous (for a number of reasons), but it got me thinking about what does work when trying to convince someone (or some company) to change their unsustainable ways. This is the topic of an annual conference called Behavior, Energy and Climate Change; among its lessons:

• Information alone doesn’t work. People usually need some other motivation. Money saved is good; money earned is better.
• The payoff (or bad result from inaction) needs to be relatively immediate. The threat that your town may be under water when the glaciers melt or knowing that you’ll break even on that solar system in a mere 15 years doesn’t get many to change.
• Competition helps. If you know what your neighbor is doing, you want to do better.
• Tracking progress also motivates, especially if you can see how much money you’re saving.

It’s hard to change behavior, and harder still to communicate in ways that make a difference. When I consider these campaigns, the successful ones have this in common: they lead by example. A company credibly demonstrates that they are walking the talk, and others follow or do business with them. Or a campaign fosters friendly competition, so participants naturally follow one another.

Meanwhile, my former housemate will be pleased to know that I’ve drastically shortened my shower times….

It can be easy to spot greenwashing when others are doing it, but often it’s harder to know how your own communications will stack up under scrutiny. One reason can be that you’re so close to the material you can’t see the problems. Here are four key symptoms we look for in a Thinkshift Credibility Quotient assessment—if you can spot these (and correct them), you’ll be less susceptible to greenwashing accusations.

Irrelevant or unprovable claims— Statements like “world’s best,” “leader in the field,” and “greenest” are unprovable, and are used so often they are meaningless. It also doesn’t help if you’re making comparisons to very ungreen products or practices.

No proof— No matter how solid your claims are, you need to back them up with hard evidence. (And making people read a white paper doesn’t necessarily count.)

Not walking the talk—Do what you say you’re doing. It’s a sure credibility killer if you’ve only got one small, greenish effort and the rest of your business has a huge carbon footprint.

Jargon or fluffy language—Vague statements without detail or backup, language only a scientist could grasp, or meaningless marketing puffery make you insincere at best and guilty of greenwashing at worst.

To heal these afflictions, make easily understood claims in plain language; back them up with facts, third-party verification, and context; and make sure you’re as green as you say you are. People are more skeptical than ever of green claims, and a key part of the solution is credible communications.