"Being in the limelight has its minuses"

In this quote, Jon Postel is recommending that remaining in the public eye or being famous has its disadvantages. The phrase "limelight" refers to the intense focus and attention that includes being in the spotlight. While it may seem attractive and desirable to have all eyes on you, Postel is advising us that there are unfavorable aspects to this level of popularity. These "minuses" could include loss of privacy, increased scrutiny and criticism, and the pressure to continuously maintain a particular image. Postel's words work as a cautionary suggestion that popularity is not constantly as attractive as it may appear.