Do you think that it's good etiquette to dump someone via technology (computer/cell phone/etc)??

of course is better in person or at least over the phone.

By the way, will-written

Dumping someone via email, text message, etc shows a complete lack of respect for that person and is kind of the cowards way out.

No. It's the equivilant of a "dear john"letter. Tacky.

Not unless it's a strictly online relationship.

i think it is better in person or at least over the phone