My reality is that I most often use Twitter at a glance during my work day and I rely on the people I follow to send and resend links so that I don't miss too many posts. Some of the people I follow are in my Gmail Buzz and I value having their posts stay there in case I miss them in Twitter. My original reason for establishing a Personal Learning Network was that I am the only one in my district who does what I do. While I'm fortunate to have two colleagues who are also Instructional Integrators, I am the only one who is at the elementary level. I have an amazing colleague in Southern Maine in Bob Sprankle and he and I have sometimes collaborated on presentations at the annual fall MainED conference. There are other people I connect with who are geographically available for occasional face-to-face contacts, but much of my professional collaboration is online in some form.
Diigo for sharing bookmarks, reading and communities of learners is a "pull" tool that I can't imagine not having. The possibilities of tags for organizing, making lists & slideshows and sharing with groups make it essential to me. While I have taught Diigo in courses I teach, I have been trying to find a chance to introduce it to all of the faculty at school. I hope to be able to do that in May of this year.
This week I expect the arrival of my new iPad2 and I look forward to that as a new tool for viewing, reading, and occasionally responding to my learning network.