One of the unexpected pleasures of middle age is that one feels that one has carte blanche to carp, bemoan the collapse of civilisation and generally be a grumpy old man. So, exhibit A, spotted at a nameless coffee shop chain that does a good line in free wi-fi, and come to that, coffee:
The use of 'less' where the correct word is 'fewer' never fails to grind my gears. And then the trees as a finite resource error. Those priggish e-mail footers declaring 'think of the environment before printing this e-mail' make me want to interface my head with the nearest flat surface, not that that would do any good. At one point I had an e-mail footer along the lines of 'the trees used to make paper are a crop and are no more endangered than wheat, so feel free to print this if you fancy', although I doubt it won many hearts or minds.