Those prices look suspicious indeed. Most of my experience is from Glasgow around 2010.
I just entered a journey I made often (home in north-west Glasgow to the central station) and that website came up with £13.50. I clearly remember paying £5 with tip for that journey from a local taxi company.
Even with the dominant black cab company, I don't remember going home from the city centre late night for as much as that.
In Paisley, which is a bit smaller, I took taxis to the airport for £3 or £4.
It was nice of Microsoft to admit that their customers are moving to Linux:
"We’ve been working with customers and partners on the migration from Windows XP since we announced in September 2007 that support for Windows XP would end on April 8. 2014. As part of this effort, we’ve made custom support more affordable so large enterprise organizations could have temporary support in place while they migrate to a more modern and secure operating system."
Well, obviously it's not open source, but GH Enterprise is delivered as a running Ruby app, so you can take a look. Of course the TOS says you shouldn't read or reverse engineer or whatever.
But I know people fix bugs that GitHub won't fix in their enterprise product by patching the Ruby source after each new update.
Though as described here: http://op-co.de/blog/posts/mobile_xmpp_in_2014/#index2h2 -- Message Carbons don't help if your phone is out of coverage for a few minutes, as your desktop client will get the carbons, but when you come back online, you'll be oblivious to any messages sent during that time.