A little back story on this article for those who are interested...
I noticed my coworker was going out of his way to use string manipulation, writing many lines of code instead of a simple regular expression. When I asked why, he explained that he didn't know regular expressions, but more importantly that he felt that he had read a lot of posts on Stack Overflow discouraging use of regular expressions. From what he had read, he felt that it was better practice to avoid regular expressions. Although this could be anecdotal, there may be a real danger here that inexperienced programmers are getting the wrong message, that regular expressions are somehow bad in most situations and not worth learning.