About the extension:
Just great, clean, easy, tree counter obviously really nice feature, but the best thing for me that I didn't realise that it wasn't Google, but Bing(through Yahoo search) that is producing the ad income for Ecosia! Still gives me the information I need, never mind Google.
About the service:
I was first sceptical, but then researched it a bit and turns out it does a very good job. Very thankful for the idea nad hope their project, funding these charities worldwide will be evermore successful.
