Students use their cell phones to call and leave messages in the target language at any time. Assign a question or set of questions for them to call in and answer.
A free Windows text-to-speech plugin for Microsoft Word It will speak the text of the document and will highlight it as it goes. It contains a talking dictionary and a text-to-mp3 converter. WordTalk: A CALL Scotland website. Can be used with languages other than English
I included this web-page because it mentions a Twitter group I like to check out called #langchat. It also archives chat sessions. Lots of practical-in-the-classroom idea sharing, especially regarding assessments.
If you are using Google Reader, you should know that it will phase out July, 2013. This article offers 4 alternative. The most popular one is called Feedly.
Are you looking for ways to use Skype simply beyond making calls in the classroom? Jeff Dunn, through Edudemic, created a list of 50 ways to use Skype in the classroom.
Jing, together with Camtasia Studio and Screencast are an amazing product. You record with Jing, save it into an MP4 with Camtasia and publish it to others with Screencast. These are by far my favorite tools, but I have never used them with students. WIth jing you can share your screen and talk over what you are seeing on the screen. Camtasia gives you the ability to edit what you created, add in call outs, zoom and pan, pixilate images, use tools like circles, arrows, dialog bubbles, etc. and then publish them with a URL to share with others. I would love to use this tool with students.