I took Bob off my twitter email alerts, because he twitters about everything, every second. Honestly, do I need to know when he's taking a dump? He's a straight up twidiot.
A Twidiot is a person who uses Twitter in foolish, immature, and counter-productive ways. A Twidiot may use Twitter to harass, intimidate or bully others, spread false or misleading information, rant and rage at people with different viewpoints, or repeatedly cast blame for his or her own mistakes.
A person with equal amounts of arrogance and ignorance who not only does not think before they speak but actually thinks the rest of the world wants to know what's on their mind.