Thanks for mentioning my post!
It's important to remember what this map is really my own -- my preferences may be irrelevant to others. On the map I mention for example that my overall use of Facebook has decreased while my use of Linkedin has increased. There are several reasons for this; one is that I don't think Facebook is a very good discussion forum, and another is that I continue to enjoy Linkedin's business focus. Others may have a very different view.
The point is that, when it comes to developing a "personal networking strategy," one size does not fit all. You really do need a personal strategy. In my case, my web site is the central focus of my "online presence," and while I tend to comment frequently on other blogs and web sites, I reserve the most thought and attention to my own site. That's a personal preference.
If anyone is interested in things you should consider when trying to decide how to develop a "personal professional networking strategy," check out the links I've posted here: