The script should be able to scan Yahoo! categories, searching for listed sites returning back a "connection failed" message; then the system, automatically, makes a search on whois for that URL and return the URL of the site (into a database) if that URL is ON-HOLD or AVAILABLE.
The script must work fast, no holes, no bugs, few resources taken from server. PERFECTLY FUNCTIONING DEMO on developer site required before paying. DON'T BID IF YOU CAN'T DO THIS, AND/OR IF YOU CAN'T KEEP IN TOUCH WITH WEBMASTER! THANKS!