vaguetexting 

1. Sending a text message with little or no expression that may suggest the end of the texting conversation. Such times when a vaguetext may be used is when you are texting someone uniteresting, you are busy at the moment, or you are simply tired of texting him/her.
2. A vaguetext may be used to test someone, and see if the person you are texting will reply with a new conversation starter. Such a case does not nessesarily mean you want to quit texting, just that you are opening the conversation up for a new topic.

Common examples include:

"Haha yeah"

"Lol"

"Nothin much"

"Thats good"

(etc.)

Jerry: Gawd I hate texting Britney!
Adam: I know, vaguetexting is her thing i guess.

(texting conversation)
Ryan: So i just got a new bike! :)
Nick: cool

In the above example, Nick vaguetexted Ryan, implying that he was uninterested in him getting a new bike.

vaguetexting by checkkss March 25, 2010

vaguetweeting 

An emo/ranty/snarky/"blind" tweet that does not mention a specific person or event, doing nothing more than garner attention because people can't help but be paranoid and wonder if it refers to them. Similar to vaguebooking.

@bob: Your version of the "truth" is unbelievably ridiculous, dude.
Everyone else: Looks like @bob's vaguetweeting again...

vaguetweeting by Chibi Jeeb February 26, 2011