Anyone be familar with them?

1. iEarthWorm
=> Agent: 203.209.240.178
"iearthworm/1.0, iearthworm@yahoo.com.cn"
=> 10K~20K crawls per day. Get JPG/GIF/PNG Only.
Very weird http-referer.
=> Whois: Yahoo! China


2. Yodao
=> Agent: YodaoBot/1.0
http://www.yodao.com/help/webmaster/spider/
=> No such web site...
=> Whois: Individual?
=> 0.1K~0.3K crawls per day.