it really depends on where the posts are posted

As I can see some posts in some forums closely related to daily life asking for help people are passoinatley to offer opinions or assistance. It really based on the nature of the forum or the topics. In  forums like MYSJ, it is a learning forum, most of the time people click, read and leave without leaving a word, because it takes time to analyse the posts and point out the parts need to be improved, for example, people need to listen to voice recordings careful before provindg suggestions.It is a tedious work, and that is why I really appreciate their help every time when I receive valuable feedback. However, usually what people don't have is time. Everybody is busy.  In a short word, learning,exchanging opinions related to serious topics are not like having fun talking about relaxing topics like the fashionalbe trends and how to bathe pets in a sink  :D