1st time on ekosystem: Mick Burson from Albuquerque New Mexico.
2 loooong walls by SLAK from Russia. Direct links to the hi-res pix: 2012 wall + 2011 wall.
1st time on ekosystem.org : Moritz Mizrahi aka Moiz from Austria.
Graffiti pieces by Huskmitnavn & EGS done on ryijy by Niina Katinka Mantsinen. Ryijy is a traditional finnish textile wall hanging.