Because all of the "send a newsletter to a bunch of recipients" services insist on wrapping all of the links in a message into tracking URLs so that metrics can

Because all of the "send a newsletter to a bunch of recipients" services insist on wrapping all of the links in a message into tracking URLs so that metrics can be gathered and data harvested. The person who posted this is likely on Turing Pi's e-mail list and they simply copied-and-pasted the link they received.