While I was reading through the FAQ and other help pages (in the footer section) on SO Careers website, I clicked on the "feedback always welcome" link and it took me to the main page of Meta.SE website. But, I noticed my browser address bar was filled-up with a long URL as shown below:
That's a very long URL with a huge parameters at the end of it. And upon clicking, it took me to the main page of Meta.SE (short URL: http://meta.stackexchange.com). Out of curiosity, I looked at the other "feedback" links of S[OFU] and none of them had these very long parameters at the end. Also, upon searching for the "hstc", "hssc" and "hsfp" parameters in the Meta.SE search box brings "0" results.
Does anyone know about these strange and very long parameters in the SO Careers "feedback" URL? What are they stand for or used for?