How to Remove I like it -- Tags and Notes using SharePoint Designer

There are two ways to remove social tags i.e. I like it ---  Tags and Notes

1) go to central admin- Farm Management -- Manage Farm Features-- Deactivate Social Tags and Note Board Ribbon Controls, but it will impact all the web application.

2) using SharePoint Designer open the master page i.e. v4.master and add style="display:none" to the following code.
                                     class="s4-socialdata-notif" style="display: none"                                        SharePoint:DelegateControl ControlId="GlobalSiteLink3" Scope="Farm" runat="server"                                   

                                   
                                       
                                   

“You must specify a value for this required field” error when hidding PlaceHolderPageTitleInTitleArea

 Instead of commenting or deleting the following code

asp:ContentPlaceHolder ID="PlaceHolderPageTitleInTitleArea" runat="server

use style="display:none;" as follows

asp:Panel style="display:none;"

asp:ContentPlaceHolder ID="PlaceHolderPageTitleInTitleArea" runat="server" /

asp:Panel

 

When customizing SharePoint 2010 MasterPages you often don’t want certain content placeholders to show up on the page.  You should not delete or comment these elements out but instead set the visible=”false”  or display:none attribute on the content placeholder.