Interesting. I hate the lettering on MAC brushes because it comes off so quickly. I missed the tip about painting over it with clear nail polish by a week, because all the lettering on my 187 is completely rubbed off. (And I did buy it authentic at a counter, so I know it's not that. =])
Well, I'm glad I saw your post, because I hadn't heard about the clear nail polish, and the lettering on my 187, 239, and 272 is about halfway off...so I just grabbed some nail polish and painted them a minute ago. Now I just have to remember to do the same thing to the 217 and 219 that are coming in next week!