i have two sites, example1.com and example2.com both have a back link from example3.com when i try link:example1.com , example3.com is in the resault but when i try link:example2.com , is not . why
no worries as long as your three sites all indxed by Google their all backlinks from these three sites shall be all recoded in Google DB G just does want to shall them all. Some say G try to against backlink farms scripts. So all you need to do is to check if they are indexed or not and check robots check meta tags check href tags check caches or use yahoo.com check backlinks
Thanks for all your answers . I do use GWT and yahoo site explorer sometime , the resaults are quite different . I wondering which is better