It seems easy enough to track my own IP address.
Moderators on a site like this must be able to track the IP adress of every single member that posts here.
Its something to keep in mind when constructing posts and threads.
Websites are able to log the observed IP address of every connection if they choose to do so. ("Observed IP address," because it is possible to use proxies to mask the actual IP address.)
Every carrier between you and Able2Know (or any other website you use) can see the data packets. They can even capture the packets and read the data if you are not using encryption. Even with encryption, some data is visible. Source and destination IP addresses and port numbers are sent in clear text even if an encrypted connection is used.