Event-Tease

Refers to someone who creates many interesting Facebook events, and cancels them.
Friends make plans around these events, or look forward to them, but then their expectations are dashed when the events are suddenly cancelled without warning or reason.

"Hey Johnny, were you planning on going to the party at Monica's house that she listed on FB? She just cancelled it too! She cancels 95% of the events she creates! She's such an event-tease!"