Language study
The opportunity of sharing to others in a proper situation is a good thing. Even if, it is the thing you are not expert or interested in.  More you have shared more you will have learnt, though you are a giver or a receiver. It’s the main idea we are talking to.
In my opinion, the potential advantage of blogging in term of language study is a good way to share anythings on your own. You can write anythings you want. not only your experiences, feeling, questions but also your comment on the others writing. The blogging can provide you your space to write, make suggestion or discussion especially, there are no limitation for the place, country, social background  time or status to share anythings on you mind. So you can share, learning from them and let practise your language skills. Then you will see your changes, you language skills are improved. And so do I.