DIIgo & Delicious

I was pretty well sold on Social Bookmarking via Delicious when I checked out Diigo. They are similar in their use and features. Both have great application for professional collaboration and student/teacher communication.
Diigo seems to have some features that make me reconsider which one to use for my Spanish I classes next year. One feature I like is the annotation tools. To highlight particular text or pictures as well as add post-it notes with comments and hints for students would be helpful as a teacher. I also like the ability to get a snapshot of the website that can be accessed and used even if the website becomes "no longer available" in the future. Any teacher who has ever had a website move or expire after they have planned an entire lesson around it will understand this feature's practicality.
Diigo has has Educator Accounts with some special tools not available to others. Using Diigo, a teacher can easily up a private network for a class with safety considerations created by Diigo. For someone who worries about internet safety and is not able to create these features herself, I love this feature! A teacher can even link several classes, a feature I think will be helpful to me when my colleague and I will both be teaching the same level. Even the plethora of irritating ads are limited for students with the Educator account PLN. This is great if you have any students who are easily distracted (think "Ooh, shiny")reducing attention diverters is a great help in increasing on-task behavior.
Several applications of a PLN with my students jumped in my head almost immediately. This would be a great way to organize recommended resources such as online English-Spanish dictionaries, grammar help sites, teacher-created podcasts of vocabulary, etc. it would also bew a great place to help students connect to the online textbook we are using next year to save the cost of adding over 150 books at $60 each for next year. This would also be a great way to organize a series of webquests using the tag systems and the annotation tools. The collaboration tools between teachers and classes will be helpful for everyone, too.
Overall, I find delicious and diigo a more productive web 2.0 tool than facebook or twitter because of the broader range of apllicable scenarios, but there is still time for me to alter my perception as we continue exploring web 2.0 tools. Besides, as arecent piece I added on my PLN in delicious stated, "Teachers need to stop telling students to power down the 21st Century technology." We need to embrace the tools we can or we risk alienating our students and undereducating them. I need time to develop my skills as I realize my prowess is less than that of my students but I am working on it. My growth since school started this fall is greater than any year since my first. With some time and energy applied over the next few months, I will start next year more techologically integretaed than I have ever been. I hope this increases my students engagement and success.