In the United States. If used by an American, the term generally sounds affected, designed to imply that the speaker/writer is a world traveler or an expatriate.
"It feels so weird being stateside again", sighed the student returning from her junior year abroad.
Like to fantasize, except in this form you update your Facebook/MySpace/Etc. Statuses about a person you usually adore. Is often seen as creepy and looked down upon.
Statusize in place - "You know when you don't respond I think about it for hours afterwards? But its pretty much OK. Cause I'd be thinking about you anyway."