musicbrainz_db_slave=> select * from statistic_event where date = '2008-09-01';
date | title | link | description
----------------------------------------------------------------------+-----------------
2008-09-01 | Amazon betas SoundUnwound | http://blog.musicbrainz.org/?p=344 | ARRAY(0x92fcac8)
(1 row)

I'm guessing this is a side-effect of the XML parsing process – the old description was:

Amazon betas <a href="http://soundunwound.com">SoundUnwound</a> with data from MusicBrainz.