SharePoint out of the box supports only one way replication of user from AD to SharePoint which ofcourse means that when users update their profiles in their Mysites it doesn;t get replicated back to AD.
Even worse, their properties can get overwritten during the next profile import from AD.
The 2 recommended methods for updating AD from SharePoint that I have heard of are..
- Microsoft Identity Lifecycle manager
- Bamboo Solutions User Sync
From my little research the Bamboo Solutions seems to be a lot better. - ee review here - http://www.sharepointreviews.com/component/content/article/50-user-management/102-User-Profile-Sync-Web-Part-by-Bamboo-Solutions.html
ILM requires creating an import file from SharePoint - Already sounds too complicated if you ask me.
If anyone has experience with this, I would love to hear some feedback.I will probably end up using the Bamboo Solution so will be able to provide some feedback soon.