2. The term is a combination of the word 'keyboard' (the main tool by which the person expresses his/her latent rage) and 'warrior' (due to the warrior-like aggression, tendency towards violence, headstrong nature and propensity towards brute force as a means of resolving conflict rather than more subtle means dependant on finesse).
3. The Keyboard Warrior seeks to use the power imbued in his 'weapon' to effect death and destruction (in a strictly-metaphorical sense) upon his foes (other virtual identities he has encountered on the internet). In essence, the keyboard (ie. text input ability) allows the keyboard warrior to manifest his true warrior nature in a safe and removed environment, from which no real-life repercussions .
4. Keyboard Warriors are generally identified by unneccessary rage in their written communications, and are regarded as 'losers' by other virtual identities on the internet.
Anonymous no.2: "yeah, must be keyboard warriors, fuck the lot of them hey?"
He/she will also generally Copy as many people as possible on the email, becuase they are under the erroneous impression that they are being witty/funny and that everyone will agree with their comments.
In person they are usually quite timid and do not like direct confrontation. They generally have deep rooted mental issues of depression and or rejection usually becuase they have small dicks and they were breast fed till the age of 10.