SiN: Default notification, and main interface with your servers. Built in.

ICQ: Most commonly used, easy to setup and use

dURL: Gaining popularity, makes use of a text file to point server to your IP

 text file structure is as follows

 [ip]youriphere[/ip]

 thats it.
 You can also make it an html file, just as long as those tags exist somewhere in the file
 you can do it with anything. You can embed this text into a bmp if u want to. Just make
 sure you do it right.

CGI: Pretty popular method, just enter ur cgi url (with the full path to ur cgi script)
 and your logger will take care of the rest


- RaGe