When you sign up, you can choose your own user name, as long as no one else has previously chosen it. This is due to the fact that user names are unique. There are several types of domains. Countries also have their own domains. Using it is as easy as browsing to the web site, logging on and sending or receiving E-mail messages.
Sessions expire after several minutes of idle time.
This is done in order to reduce server load and to protect your privacy in case you forget to logout at the end of a session. In order to continue an expired session you need to login again. Top of section I hit a button and nothing happened for a long time. This means that it is waiting for information from a server. At certain times during the day, the network connection between your computer and ours becomes busy and sometimes you have to wait a little longer for a response.