does anyone know the meaning of this?
In bismuth we can bey as always centrex derive theirfore chopin is
bemadden and controlling.

Hi brendaadams,

Most likely, that is nonsense text put in the message not to
communicate anything to you, the reader, but to attempt to persuade
spam-filtering software that the message is not junk email.

This technique appears to be aimed primarily at "Bayesian" filters,
which use the content of a message to guess whether it is spam or not.
 When you use one of these filters, you train it by telling it which
messages are spam.  The filter keeps track of words that appear in
spam and non-spam messages, and when a new message is presented to the
filter, it calculates a probability that the message is spam based on
the appearance of its words in previous spam or non-spam messages. 
Then if the spam probability is high enough, the filter can set the
message aside, typically in some kind of spam folder, so the user
doesn't have to see it.  The sender of this message was trying to make
it look less like spam by including real words that are not related to
the real message.

http://www.kuro5hin.org/story/2004/7/27/34118/9641

http://www.broadbandreports.com/forum/remark,10559591~mode=flat

Here's an introduction to Bayesian spam filters from About.com.

http://email.about.com/cs/bayesianfilters/a/bayesian_filter.htm

Some collect this kind of nonsense as found poetry.

http://www.theregister.co.uk/2004/07/23/spam_poetry_compendium/

If you need any further explanation about any of this, please ask for
a clarification.

--efn