Hm, reading the comments I get that it's always the same story: If you're not paying, you're the product.
BT is trying to make some cash selling data to third parties. Since google allows to specific network blocks (defined probably by IP address) to use non-SSL connections, BT installed public WiFi to offer internet access and gather data which could be sold to advertisers. Is it really a goldmine? I'm not sure, with Google and Facebok gathering much more personal data than BT ever will, I'm not sure if it's a Goldmine, depends on the quantity and accuracy I guess...
BT is trying to make some cash selling data to third parties. Since google allows to specific network blocks (defined probably by IP address) to use non-SSL connections, BT installed public WiFi to offer internet access and gather data which could be sold to advertisers. Is it really a goldmine? I'm not sure, with Google and Facebok gathering much more personal data than BT ever will, I'm not sure if it's a Goldmine, depends on the quantity and accuracy I guess...