I think it's great that you set this up.
I'd suggest editing some of the key posts, like good www links, rather than making new blog entries.
I'd suggest putting names on the blog post titles, to make it easy to see who posts what, if that is needed. I can't really tell.
Final comment, I thought our long Skype session two days ago was really fruitful. I hadn't seen clearly that the differential could be hooked up any random way, and it would still do its job if you changed the gear ratios in other places. This was all possible because of the really clear illustration Lilian (?) had made.