I posted this salesforce.com Idea awhile ago – https://success.salesforce.com/ideaView?id=08730000000kdeiAAA
The Idea is that any section within a page layout would be a HTML anchor tag.
Example would be link to Additional Info section under Contacts. Would look like this.
This will help people that have large page layouts. You would be able to share links to other salesforce.com users and link to the section the data you are pointing out is.
If you like this Idea please go vote for it.