tattoo do's and don'ts

Most of us can agree that tattoos seem to be the symbol of 'hipness' du jour. Old and young, Black and White are sporting tattoos of varying colours, styles and meanings. I have nothing against them personally, but I swear that some people just wake up and decide to get a tattoo without any proper thought of what they're permanently stamping on their bodies. Where they place these tattoos is another eyebrow raiser.
Anyhoo, I decided to come up with 10 do's and don'ts for sporting tattoos: