Does anyone know of a projector for the iPhone (or other smartphone) which can project the entire screen (and not just handle videos and photos)?

I do not and I can not find one (but, admittedly, I haven't gone to talk to the Apple store people yet).

I would like this ability in my classroom next year once I begin to run the most technology-aware middle school math class on a low budget you've ever seen ;-)

In the mean time, using a document camera seems like an OK solution. A document camera is a wonderful tool for a teacher to have anyhow since it is an easy way to share student work.

Check this cool vid:

http://www.youtube.com/watch?v=mu5JKtZCP04

I'm reading this assignment article about tagging and just feel compelled to write out a few reactions.

Reasons why I don't often tag:

a) It's inconvenient, takes time to do, and I'm always wondering whether I've chosen the "right" ones. (Btw, I hate sites which enforce at least one tag.
b) I am super private with my web content so I don't feel the need to share with the world via tagging
c) I don't wish to contribute to the "tyranny of the majority" and put my own slants on articles for the world's languages and cultures (see the article, page 6)

Why I don't need tagging to advance and personalize my online searching (that phrasing is from page 1 of the article where they state their views on tagging as goodness):

I live in Google Reader. I subscribe to feeds I know are useful but I also do another thing, which is how I enhance my online searching : I have Google Alerts set up to deliver content directly to my Google Reader. This is how I find and add good sites to my Google Reader. I have alerts on words, person names, and one currently on a sentence I found in an article which I admired so much I wanted to see who on the 'net was quoting it. When Google's engines detect new content containing one of my alerts, they shoot it to a feed on that alert and it shows up soon after in my Google Reader - hooray for Google advancing and personalizing my online searching!

Now, don't get me wrong, I like what tagging does for certain web sites (like youtube) which I frequent. I like how it leads me to new videos I would not have found on my own, for example. But I definitely am not going to take extra time to travel to a site like delicious to see what's cooking in their tagland. I don't need it!

Just thought I'd throw this out there to see if others think similarly or want to tell me what they think is wrong about my thinking or, best of all, want to tell me about some web site using tagging you think I should check out, even given my objections.

p.s. I am tagging in Diigo because I gather it's part of our class duties ;-)