See the sed(1) manpage as well
Basically just adding some links I found on another article at unixreview 
http://www.unixreview.com/documents/s=8217/ur0305e/
Eric Pement has a page of sed resources at: http://www.student.northpark.edu/pemente/sed/.
The "seder's grab bag," a collection of sed scripts and miscellany, is at: http://sed.sourceforge.net/grabbag/.
Both of the above have a copy of 'Handy one-liners for sed', here and here
The "UNIX Grymoire" has a very nice sed tutorial online at: http://www.grymoire.com/Unix/Sed.html.
No other page links to SedNotes yet.
