When I was customizing the SharePoint 2010 V4.master I found the Social tags I Like It and Tags & Notes which are new in SharePoint 2010. The tag is a SharePoint Delegate control
The tags are occupying big amount of area, so our client told to minimize the icons to make use of space, also he given the hint that the nightandday.master has small social icons
<SharePoint:DelegateControl ControlId=”GlobalSiteLink3″ Scope=”Farm” runat=”server”/>
sooner I opened nightandday.master and compared with v4.master and found v4.master Social tag Delegate control Id is ‘GlobalSiteLink3’ and the same delegate colntrol Id is GlobalSiteLink3-mini in nightandday.master
So I just changed the control Id to GlobalSiteLink3-mini in v4.master and minimized the social icons.
<SharePoint:DelegateControl ControlId=”GlobalSiteLink3-mini” Scope=”Farm” runat=”server”/>