I first saw this posted on REVOK's site, which he gave credit to 12ozprohet as his source. REVOK also made a reference to the longevity of graffiti in Los Angeles and how lasting a couple of months or even weeks gave you close to landmark status. I think Miami's standards are even lower with you being lucky if your spot hasn't been buffed or gone over within a day, week max. In the case of British graffiti pioneer ROBBO, he had a piece running in the Regents Canal for over 15 years. So long, that to call it a landmark would be an understatement.
(Original ROBBO piece for the Regents Canal in Camden, London circa 1985)

That is until BANKSY decided to go over it.

However, ROBBO would have his revenge and claim his spot back! I think ROBBO was smart enough to understand the gravity of having BANKSY "collaborate" on his work.
