Plone Keyword Manager can be easily installed and removed with the built-in install mechanism in Plone. Place it in your Products directory, restart Plone, and use the Add/Remove Products panel to activate.
Plone Keyword Manager uses Python's difflib for the similarity search per default, but if you want to speed up the Plone Keyword Manager, you should install the Python-Levenshtein-Module (written in C) which will makes things up to 10 times faster. A copy of the Levenshtein-Module is provided in the package (to install it on Linux do something like "cd python-Levenshtein; python setup.py install"). Plone Keyword Manager will use the faster Levensthein search automatically if it can be imported by your Zope instance.
After installing, you will find an entry in Plone Setup called Keyword Manager. Inside, you will see an alphabetical listing and a selection for all existing keywords in your site.
Use the last one to see similar terms for a single keyword.
Use the former one if you want to see a list of all keywords starting with
b, click it. The Plone Keyword Manager will then search all
keywords starting with
b and will also look for similar keywords. You can
now select several keywords and delete them for example. If you only want to
change a single keyword, select it, then enter the new keyword and click on
merge. If you want to merge several keywords into one new one, select them,
enter the new keyword and click on merge.