It’s bad at #1, because LinkedIn causes unauthed viewers to hit a signup/loginwall. You’re better off putting it on your own website, because then even people who don’t subscribe to Microsoft’s user-hostile bullshit can read and view it.
The good ones do. I've got friends with blogs who post twice weekly with programming examples and tutorials. You wouldn't believe the jobs they get offered unsolicited. It sorts out the chaff because most recruiters don't know about blogs or can't be bothered.
