Ah, the message board. Almost primitive in internet technology, online forums have been popular since the dawn of dial-up. Full of information and mis-information, message boards are both undeniably efficacious and frightfully useless - often at the same time, within the same collection of posts (known as a "thread").
While most look like they were designed in 1998, message boards contain some of the most valuable advice available on the internet. Message boards enable the teaching and learning of the skills men and women were traditionally expected to have: from fixing cars to sewing, home-brewing of detergents to installing window fixtures.
However, message boards aren't all helpful. In using them, one must proceed with caution.
Do use Google for message board advice
The key advantage of message boards over Twitter or any other social networking service is how readily accessible and searchable archived threads are. Google has been great for message boards: you don't need to scour through dozens of websites to find information, you can simply type in keywords to Google to find message board listings that include the same sequenced wording. Googling for message boards is my one-stop-shop for technical problems; whether my Macbook is on the fritz, my TV audio output isn't working, or a strange light has popped up on the dashboard of my car. Chances are, when you're specific with make, model, and symptoms, there'll be dozens of people out there who have experienced the exact same troubles, taken to message boards to find knowledge and ask experts, and shared successful and unsuccessful outcomes.