It is important to limit your computer time and stay current in your real life.
Everything comes first before computer time. That includes prayer, Bible reading, wife-ing, mothering, cooking, cleaning, loving your neighbor and so much more.
This cyber fellowship is important and very vital to those who cannot find like-minded lady friends. It's not wrong to belong to a Yahoo group, or to read wholesome blogs (in my opinion) but for some ladies it becomes wrong when they cannot manage their time well.
Being "able" to communicate this way is certainly very handy. It puts you in touch with people from all over the world that you could not otherwise know. However, don't neglect your real-life and your real-life friends.
I lead some on-line discussion groups and I never worry about a quiet group. I always hope that our members are praying, reading, and living peacefully with those they know. It's a good sign that they living in the real world.