91 karma · joined August 27, 2010
If you just need data, you can get a mifi for about £50 for the device and 1G of data. Before you get one, check if they will support VoIP - then you can use Skype etc.
I'd say it's reasonable to charge heavy users more. Firstly, the cost is not totally fixed for the ISP, higher usage involves investment in their own infrastructure (routers, transit etc.). Secondly, it's arguable that heavy users derive greater utility from the service so won't object to higher prices.
If I'm guessing what the names of your Pingdom checks mean correctly, they seem to show CloudFlare making your response time 10ms slower. I'm assuming that cdnjs.cloudflare.com is the site with CF in front, and cdnjs.com is without, not sure if that's correct.
[0] http://adblockplus.org/blog/an-approach-to-fair-ad-blocking