Steve, welcome to Pray.Network! I see from your profile that you are interested in prayer for Missions and The Nations, among other topics. I recommend Marsha Mundy's "Prayer for the World" group, as it has several discussions related to praying for the nations and praying for missions. I'm currently maintaining two prayer blogs in that group - a 31-day prayer for India and a prayer blog for the Persecuted Church, using Open Doors' World Watchlist and prayer calendars. There's also a group for praying through Operation World. I haven't posted there in a couple of months due to other prayer campaigns, but hope to get started again soon.