Yahoo ignoring NOINDEX and NOFOLLOW

I already made a post about it(http://web-search-techniques.blogspot.com/2009/07/yahoo-and-bing-ignoring-noindex-and.html). Yahoo and Bing Ignoring NOINDEX and NOFOLLOW in the meta tags

I got the proof here

http://siteexplorer.search.yahoo.com/search?p=http%3A%2F%2Fweb-search-techniques.blogspot.com%2F&bwm=p&bwms=p&fr=sfp&fr2=seo-rd-se

http://web-search-techniques.blogspot.com/2009/08/piggyback-seo.html this page has been in yahoo search engine index which has

<META NAME="slurp" REL="noindex,nofollow"> 

tags in its HTML


So. it would be good to password protect if you have any confidential data to protect it from yahoo search bot.

But BING seems to be started respecting NOINDEX and NOFOLLOW.