Here's a cool CSS trick to show icons next to each download link.
from http://delicious.com/
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Iconize Textlinks with CSS
Where will this link take me?
Links are fun, but sometimes we don't know where they take us. With this little CSS technique a user can identify a link by it's icon. This whole thing was inspired by the "Showing Hyperlink Cues with CSS" article of Ask the CSS Guy.
The idea is pretty simple, if a link points to a .pdf file, we show the .pdf icon after the link.
Here are some more examples which i already implemented:
from http://delicious.com/