After installation on the Mac, DING automatically install itself in the Login Items (or Startup Items on some OSX versions) list in the Accounts pane of the System Preferences (without asking for authorization BTW).
Because of that, DING starts up automatically when you start up your Mac (or restart it) IF it was installed correctly as was posted by others above, with no need for you to start the program manually after the first restart or startup. You will from that point forward see the icon (marked active) running in the dock (with the exclamation point superimposed when there are new deals).
In order for it to monitor their site yes it must be run all the time- and it will only monitor the site if you are have a full time internet connection (or when you are online via dial-up internet access if that is what you have).
Now that being said, I will caution you to start watching for odd behavior from your Mac when using it. While pretty stable with the PC version apparently (after talking to a few people I know using it on PCs), the Mac version is not nearly the same in my experience. I ran it for a couple of months in 2007 under OSX 10.4 and had a bunch of odd behavior that after hours of troubleshooting I was finally able to trace to DING. Disabled it and problems vanished. Now I am
NOT saying that you will have similar problems on the Mac version, but when I checked it out again just now I was dismayed to find that it is STILL the same version that was released in 2006 (version 1.05) so that is why I caution you. Perhaps it did not need it but I found it interesting that there have been NO updates at all since then- even with the introduction of 10.5 and such. By the way, should you have difficulties with it, forget trying to report that or get support. Several emails detailing the problems were sent to their "support" section with 0 replies.
Good luck with it- I really hope it runs problem free for you and I wish I could run it without concern! Just thought I would mention the above just in case you start to experience some unexpected problems as it might save you some serious troubleshooting!
