Blogging and social networking do take a commitment of time. To be effective you really need to be posting and interacting with your communities at a minimum of once a week. I have read that every-other-day is optimal. I'm still working on that.
For efficient blog reading, you'll want to set up a blog reader which will "collect" all the latest posts from the blogs you follow into one place where you can scan through them quickly. I use
Google Reader Feedly, though others are available.
I have a filter set up on
Google Reader Feedly to group my favorite blogs together. I "follow" hundreds of blogs. Obviously, I'm not able to keep up with reading that many. When I log on to
Google Reader Feedly, I first read through the recent posts on my favorite blogs. (My favorites include blogs of personal friends, family, and a few that I read regularly just because I find them especially helpful or inspiring.) When I have time I scan through posts on other blogs I follow. You can also set up your filters to sort the blogs you following into categories-- so you could group all the homeschooling blogs together in one group, and maybe another group would be homemaking blogs, or gardening blogs, or whatever you are interested in.