and the reason for that is that blogs typically contain a more or less elaborated solution for a specific problem. And that problem was serious enough to let the blog owner consider writing a solution article out of it.

Forums are very much often different. Did this ever happen to you? You searched for an error message and the only hits you got are mailing lists or forums where somebody has the same issue? And if you really have bad luck then the only hit is your own posting :-)

Thats why I favor blog articles. They give a solution and also very often some additional background information. Spot on my problem.

Thanks to google! Without a powerful search engine finding this distributed information you would have to use a forum and pile up more questions without answers :)