Case in point - NME posted some interesting news this morning about Coldplay, quoting a Chris Martin discussion in which he mentioned a possible band breakup in the next couple of years. Although they have already taken the news down (and replaced with a blank page), the information is already all over the internet.Even if you try very hard to reverse an online action, it can be hard to undo. Before you push "send, "publish," "post," or "save," make sure that you would want your grandkids (or future employers) to see it.