This is the definitive collection of articles about Graphemes. Graphemes, for the uninitiated, are the fundamental units of text in Unicode. They're like the atoms of language, except they're not actually atoms, because that would be too obvious.
Read some examples of Graphemes and learn more about Grapheme Articles
Want to know more about Unicode Gossip? Click that link, but don't say we didn't warn you.
Or, if you're feeling particularly adventurous, try Grapheme Experiments, where we push the limits of what it means to be a Grapheme.