Go to this site and it'll tell you what your IP address and hostname are, what port you connected from, and what web browser you're using.

Harakiri Mail is an online service which allows anyone to create disposable e-mail addresses which are deleted after 24 hours. You can view the message with a web browser, walk away, and never worry about the address again. They have browser extensions which automate the process somewhat if you have great need for lots of disposable addresses.

Each disposable inbox has its own RSS feed: https://harakirimail.com/rss/username

Nominatim is the OpenStreetmap server for searching the database for an address and figuring out where in all of the map datapoints that address is. When you figure out where in the database it is, you can then serve up the appropriate map tiles. Powers the search box on the website. Used to import the map data.