Of course, my hope is that any programmer who uses the Web also gives back to the Web, posts their solved problems, tips, sample code, and so on. (I’m lucky that I get to do this as part of my job.)
For a programmer these days, knowing how to learn on the Web is more important than knowing any particular language or environment.
Were I interviewing a programmer today (I’m not), I wouldn’t ask as much about their education or experience with specific tools as I would about their use of the Web. And, because I believe in a sort-of instant Web karma, I’d also find out if the Web for them is a two-way street.
It’s possible that I wouldn’t hire anybody who doesn’t already have a weblog. Given the choice between a programmer with a computer science degree and a programmer with a weblog – everything else being equal, I’d hire the programmer with a weblog.