Q&A for enthusiasts and power users of the Android operating system
with myposts as ( select Posts.id as ID from Tags, PostTags, Posts where Tags.Id = PostTags.TagId and Posts.Id = PostId and Tags.TagName in ('linux-kernel', 'kvm', 'libvirt', 'xen', 'yocto', 'android-source') ) select DISTINCT Users.Id, DisplayName, WebsiteURL from Users, myposts, comments where Comments.PostID = myposts.id and Users.Id = Comments.UserId and Users.WebsiteUrl IS NOT NULL and LEN(Users.WebsiteUrl)>0