I prefer writing a big blog than writing two smaller ones. The reason being that when you are putting some effort, it's always better to put s little bit more of your efforts. This way you're likely to succeed more in whatever you're palnning to do, for example, trying to make people aware, or selling a product or a service, or getting your ideas among the people. It's better to be as explicit as possible than being short and unclear. I have done my first blog on women issues. It was a huge success, because I chose to make people aware of several facts that many are not aware of. I elaborated many of the unknown things which many people liked and appreciated. So I able to spread the message which I wanted to. So in my opinion it's better to do one large elaborate blog than two smaller ones.