We have put together another very special Flickr group showcase , our fourth of 2013 with some of our favorite images submitted this week. The quality of submissions continues to rise every week, so we have decided to make our showcases that much bigger to incorporate as much of this stunning mobile art and photography as we can and to get it out to a wider audience. Each image can be viewed on Flickr by clicking on the relevant artist below: With special thanks this week to: Lea Zimany, Lisa Waddell, Sacha Dohmen, Wilder Biral, Gizemkarayavuz, Donna French, Ali Jardine, Paolo Berni, Ruthie St Steven, VeroicainMo, Zoee Nuage, Vicki Oseland,…