I don't see the point in announcing to everything about your departure, to be honest. You're most likely going to come back, trust me. 80% of people (from personal observation) who said they're leaving inevitably come back. I've also done this before with another forum and I still came crawling back, although thankfuly it's closed down now.
Then there's pea... who left/came back so many times, and now currently begging to come back after doing the fucking stupid mistake of ASKING to be banned due to a retarded personal dispute.