One of the best ways companies and generous individuals can help conservation is to match donations from the general public. For example, if someone was to match all the donations to our Orang-utan Appeal in Borneo, up to a maximum of £10,000, we know that it would provide a stimulus to lots of already generous supporters out there. It would also be good publicity for a company.
Or even if they were to only add £1.00 to every donation, it would still potentially be a cheap way of marketing the company (less than some Internet advertising options).
In a world where everything is increasingly competitive, for a company to show they care for the planet may be considered by some as greenwash, but I can assure you the orang-utans aren't that bothered as long as their forests survive. And it's not looking too good, so they need all the help we can give them.