Maybe you already know that "zine" is the name for a small press publication or alternative newsletter. An e-zine is usually an online magazine or an electronic version of a print magazine. E-zines represent one of the best things about the Web -- that anyone can publish online. E-zines can be independently created or they can be sponsored by major publishing companies. They can be liberal or conservative, weekly or monthly, professional or recreational.
Here's another thing to keep in mind: magazine is to journal as e-zine is to e-journal. An e-journal runs in academic circles and is more scholarly than an e-zine.