Why not offer free assp spam filtering?

[verifone411]

may people are saying it works quite well http://assp.sourceforge.net

Instead of just offering spam assassin and a paid product?

Thanks

[felgall]

As an open source product there is probably nothing whatever to stop anyone who wants to use that from simply installing it onto their hosting and using it. It doesn't look like the sort of product that needs to be pre-installed by the hosting provider.