Does anyone know of a program that performs a similar function to the Innerprise URL spider pro which collects targeted urls and puts them in a Links formatted database?

Is there another option, spider or program available that is less expensive or freeware that will collect urls from the yahoo or netscape directories on a specified topic, even if the resultant database is not in Links format?

Gossamer-Threads Links is an awesomely great script and could be further enhanced by the addition of a targeted url gatherer utilility. Is this a possibility for an additional feature in the future?

Thanks for any information.