Hi to all, just want to let you know a bit about some of my experiences, gathered over the years. The situation: Domain - top 500 company PR 8 more than 15 years old My site: a "private" directory on that domain, 10 years old, main page 0/white, all the directory PR grey A few links placed there ALWAYS show great effects. As PR is not existent, must have to do something with age and trust. Need to say, before G froned up on directories it had PR 2-3 on all pages. To me it looks like the famous .gov or .edu value has more to do with domain age, than the TLD. For one of my new domains (18 month - without use), 35 links there made it ranking great after finally uploading some content 2 weeks ago.