Here’s a tedious task for you to consider. When you log-in to your favorite website these days, you’re creating a JSON document and posting it to the service you’re logging into. Long gone are the days when you just posted simple form parameters from a whole post. I work on an emulation platform: one of our features is to use Perl to emulate hundreds of users logging into a captive portal. This requires an economy of memory and time: creating hundreds of “firefox -p ~/.cache/firefox/xzf30d.userprofile” profile sessions is clearly not:

1. memory efficient
2. bound to specific network interfaces
3. time efficient
4. scriptable

So we use Perl. This requires reading through the F12 -> Networking tab of your browser’s debugging window and emulating the AJAX post to login. Fun once. Wouldn’t want to live there.