Kita sering mendengar kata blog. Apakah itu blog? Berikut beberapa definisi blog:
“…the first journalistic model that actually harnesses rather than merely exploits the true democratic nature of the web. It’s a new medium finally finding a unique voice.”–Andrew Sullivan
“[a] collection of posts…short, informal, sometimes controversial, and sometimes deeply personal…with the freshest information at the top.”–Meg Hourihan
Secara sederhana blog merupakan buku catatan harian (personal journal/diary) yang diterbitkan di media Internet.