Do they disclose what percentage of their revenue is donated?
If it's just a token amount, then I'd rather not support a marketing gimmick and would prefer to just donate directly to an organization focused on trees. If it's a significant amount, then it seems unlikely that they'll be able to compete with for-profit alternatives that can focus on developing the best product.
If it's just a token amount, then I'd rather not support a marketing gimmick and would prefer to just donate directly to an organization focused on trees. If it's a significant amount, then it seems unlikely that they'll be able to compete with for-profit alternatives that can focus on developing the best product.