mathml

http://mathcs.chapman.edu/~jipsen/mathml/asciimathdemo.html

wikipedia pronunciation guide

another cool blog

http://annevankesteren.nl/

data: URI or the data protocol

http://en.wikipedia.org/wiki/Data:_URI_scheme

another cool site

http://www.treebuilder.de/default.asp?file=621700.xml

another cool blog

http://www.codedread.com/

check out

http://intertwingly.net/blog/