In our case, I have to assume only a limited amount of players (writer, bloggers) who are blogging about one topic. Example: "My 2013-2104 test of the Vermont Stove"....
At my first glance, thread starters may fit better because the threads could all be kept (moved by mods) to sub-forums within the proper forum, as opposed to being in a blog format.
Blogs seem to be more for folks who are going to write about multiple subjects - whereas my use would probably only be 20-30 people each year posting about
1. Their test of a stove
2. Their visit to a factory
3. Their especially detailed installation.
What say you?