I have no clue if this is new or not, but this is the first time I've noticed it. Yahoo allows you to use extra operators with link: and linkdomain: functions. For example, sites linking to www.digitalpoint.com that contain edu within the URL: [search=yahoo]link:http://www.digitalpoint.com inurl:edu[/search] [search=yahoo]linkdomain:www.digitalpoint.com inurl:edu[/search]
This is a very cool one, http://search.yahoo.com/search?p=linkdomain:www.seroundtable.com+allinanchor:blog
Barry try using the inanchor: rather than allinanchor: much better operator I get 60 odd pages in your search
The bigger problem is that Yahoo does not support (at all) the inanchor: or allinanchor: operators. So it's simply treating it as a normal search keyword and returning pages that contain the word "inanchor" for example.