I found the blogging gives more freedom to express view. Especiall, when you are expressing your views in a thoughtful manner in alias or group, some members would not be so comfortable to appreciate rather find fault on that for something.. This happens if your live hood is connected with mail client or you are active reader of some new groups.
Here the blog gives me more freedom to be expressive on my thought and normally set of blogger who appreciates is valued as encouragement. Also, you are not going to sell your ideas and thought with expense of somebody's privacy. Just open for all, whoever finds your postings are valuable or worth to see, then those of course will propagated too other blogger or friends.
This way, the blogging is always encouraged and it would be more cumulative encouragement in your writing..