Hello,
I need yahoo ID checking software that will get yahoo ID login list from input file (one yahoo id per one line) and will check if those ID exists on yahoo mail login page at [login to view URL];.src=ym
or at yahoo ID registration page (it your choice to select page for fastest checking of yahoo id's for they existance).
It should have option to check those ID's directly or using proxies (socks4/socks5 or using anonymous web proxy sites).