Do you think internal links give weight to your root domain in the google rankings? If you get a lot of links to an internal page, would this push the root url up in the rankings for its main keyword?
In my experience what happens is that if your internal page ranks high for a certain keyword, and your domain homepage also ranks for that keyword -but not as strong as the internal page) you will get a double result in teh SERPS. Your internal page will be listed and indented with the homepage listed above it
and also it boosts your sites links juice to the home page thats why sometimes sites who dont have incoming links from outside their domain but a lot of internal links get atleast a PR of 2-3.
I would like to suggest "Internal links structure" instead of "Internal links " . From the webmaster tools, we can know google also stats the internal links quantity . In fact google analytic the links structures and internal links quantity.
Internal linking is extremely important. The anchor text used in your internal links is going to play an important role in telling google what pages are about. Make sure you use appropriate anchor text to link to your internal pages and also keep in mind Google suggests that you keep the number of links on a given page below 100.
PR obviously flows so in that respect you can say stronger internal pages help home page but really, a link from other similar strong page carries way way more weight than your own internal page. There is atleast 1 DP member who has tons of PR5-6 sites with almost zero traffic, you can do your calculations
Just to clarify, I made the original post about external links to internal pages. A few people are talking about internal linking structure.
yes internal link is very use full to keywords ranking and also get back link to inner page and increase inner page rank
Yes it does, already experienced that once. your internal page ranks it also does the same to your homepage for that specific keyword. Also in doing SERP, you'll get a great result.
It depends on the competition of the particular keywords. If the particular keywords have more competition then its better to go for internal link structure for that structure. So, its good to give internal links.