Dear Therese,
I have never used blogging for self-learning but I have seen colleagues doing so. I agree that this practice mey be time-consuming but I feel it may be enriching as we get to know other people´s view on your topic of interest.
I am planning to develop a blog for this purpose to see how it works. A soon as I start it, I'll let the members in this interest group to know so that you can give me your views.
Silvana