As we are moving CRM and other sales&marketing realted applications to SFDC, and i am currently comparing the content management capabilities of sharepoint with SFDC . 

I know that SFDC do have some limitations on content management.and what i am wondering are as follows

1.  is there any best practise of sfdc content management, 

2. how SFDC to integration with content management system, sharepoint etc

3. can sfdc integration with online file sync app, dropbox etc.

Thanks

Vincent