RFC: Product directory

I'm looking at replacing the ad-hoc lists of products at
http://www.postgresql.org/download/ and
http://www.postgresql.org/download/commercial with a product
directory. I'd like to keep it fairly simple, and propose the
following data be stored:

id serial primary key -- easier in the framework, complaints to /dev/null
publisher text -- Company/person/project name
publisher_url text -- Company/person/project URL
product text -- Product name
product_url text -- URL for the product
category int4 -- Category ID (fkey -> categories table)
description text -- Product description
price text -- Pricing info (where relevant)
licence char(1) -- Licence type flag

The categories table would simply be a lookup table of category names:

Administration/development tools
Programming interfaces
Clustering/replication
Procedural languages
Reporting tools
PostgreSQL extensions
Applications
??

The licence type codes will be hardcoded:

'o' - Open Source
'c' - Commercial
'f' - Freeware

Sound reasonable? Anything I've missed?

--
Dave Page
EnterpriseDB UK: http://www.enterprisedb.com