List of Words it is NOT ok to ever say.
Glad to see "webinar" on this list. Shame about "lifestream."
The Septic's Companion - A mercifully brief guide to British culture and slang
British English slang dictionary with translations into American English.
Related links
Addictionary :: What's your word?
It's The Meaning Of Liff all over again. Creating and rating neologisms.
Buzzword Hell
Am I buzzword or not?