Thing 7 - Web 2.0 Communication Tools

I never thought of many of the applications for many of the communication tools that were covered in "Thing 7". Sending text messages when materials are available or having instant messaging available for reference questions would be great uses. One frustration that I have with these tools is the difficulty in crossing computer platforms. I like using both Mac and Windows OS's. MS Messenger does not work on the Mac regardless of what has been promoted with the interface. I believe that the industry is closer to the interface, but not quite there yet.