We might have encountered useless posts in some of the forums when we searched for some solutions and got annoyed by that.
Hear is a technical forum where no one can post unworthy questions or answers. If any one posts so, they would be down voted and loose credits. On the other hand if any one has posted useful questions or useful answers, they would be up-voted and gain credits. So the users of the forum is very careful in posting correct answers to get good credits.
90% of the common technical problems are already solved in this forum.
We can give our code which is not working properly and ask for solutions in this problem. If any one gives correct answer we need to mark that answer as "Correct" and also we have to UP-vote that useful answer. This is how the person who answers gets credits.
There are some sister forums for this site and they come as follows: (Don't forget to check the special forum for Wordpress, Meta and Webmaster given below which is useful for us particularly)
Technical - http://www.stackoverflow.com
Wordpress - http://wordpress.stackexchange.com/
Api/apps - http://stackapps.com/
Meta - http://meta.stackoverflow.com/
Webapps - http://webapps.stackexchange.com/
Webmaster - http://webmasters.stackexchange.com/
English - http://english.stackexchange.com/
DBA - http://dba.stackexchange.com/
Drupal = http://drupal.stackexchange.com/
and much more...