So
The ASUS Aura concept mobile phone is a stylish competitor to the iPhone. It addresses a few key issues that the iPhone lacks (like expandability via memory card and an option for a keyboard). Problem is, it is just a concept and probably won't see the light of day anytime soon.
So Flickr is an excellent general photo sharing site, but sometimes you are looking for specificthings. ST is a web site that collects photos on a specific theme, some of which are kind of off the wall. Fun stuff.
So
I just recently stumbled across slidshare, a site for sharing presentations. Supports both powerpoint and open office formats. Also allows you to rate (and of course tag) presentations as well.
It would be nice for this to catch on and become a single place to go for slide decks from conferences and workshops.
So
I think that this blog posting over at librarything is spot on when it comes to peoples motivation for tagging: they will do it for 'their stuff' but are less likely (or even motivated) to do it for other peoples stuff. I love the analogy of spending time tagging stuff at Amazon is like going down to the grocery and tidying up the shelves. Yes, it looks nicer, but it is the grocer that benefited and not you.
In reality the same thing goes for writing reviews on Amazon, you do the work, they get the benefit. At least if you write a review on your own blog (and are an Amazon affiliate) you might make a few cents if some one clicks through your review and buys the book (or whatever item).
So A List Apart has an interesting article on using HTML and CSS to format a book. At least the creators of CSS2 had the foresight to incorporate the concept of 'paged media' into the spec and didn't just limit it to web presentation.
More subtle problems also are possible. Camera image sensors rarely get larger from one generation to the next, so squeezing more megapixels out of a sensor means each pixel on the sensor is smaller. In most of the chip business, smaller electronics are dandy, but with cameras, they translate to less light per pixel.
That light difference means it's harder to distinguish the signals produced by light from the electronic noise in the sensor. The idea of making the signal-to-noise ratio worse may sound pretty technical, but possible consequences are easily understood: images suffer from color speckles and cameras work poorly in dimmer conditions such as indoors.