Banksy — English Artist

Banksy is an English-based graffiti artist, political activist and film director whose real identity is unknown. His satirical street art and subversive epigrams combine dark humour with graffiti executed in a distinctive stenciling technique. His works of political and social commentary have been featured on streets, walls, and bridges of cities throughout the world. Banksy's work grew out of the Bristol underground scene, which involved collaborations between artists and musicians. Observers have noted that his style is similar to Blek le Rat, who began to work with stencils in 1981 in Paris. Banksy says that he was inspired by "3D", a graffiti artist who later became a founding member of Massive Attack, an English musical group... (wikipedia)

Graffiti's always been a temporary art form. You make your mark and then they scrub it off.
Should graffiti be judged on the same level as modern art? Of course not: It's way more important than that.
There's obviously nothing wrong with selling your art - only an idiot with a trust fund would tell you otherwise. But it's confusing to know how far you should take it.
I don't know why people are so keen to put the details of their private life in public; they forget that invisibility is a superpower.
I love the way capitalism finds a place - even for its enemies.