i am taking a visual force webcam. 
no errors are thrown, but changes I make to the nomination field are not saved.

controller code is
public with sharing class clscontroller {

   public List<contact> contacts {get;set;}

   public clscontroller(){
       contacts = [select id,name,email, phone , nominate__c from contact limit 10];
                         }
   public void save(){
        update contacts;
                     }
}

VF apex is
<apex:page showheader="false" controller="clscontroller">
<!--   to hide the entire salesforce nonsense, do the above with false   -->
<!--  <apex:page controller="clscontroller">    -->
      <apex:image value="{!$Resource.blogiclogo}" width="40%" height="40%"/>
      <apex:form >
      <apex:pageblock title="Nominate contacts">
         <apex:pageblockButtons >
            <apex:commandbutton value="save" action="{!save}" />
          </apex:pageblockButtons>
      <apex:pageblockTable value="{!contacts}" var="contact">
           <apex:column value="{!contact.name}"/>
           <apex:column headervalue="email">
                <apex:inputfield value="{!contact.email}" />
           </apex:column>
           <apex:column value="{!contact.phone}"/>
<!--             <apex:column value="{!contact.id}"/>  -->
           <apex:column headervalue="nominate" >
                <apex:inputfield value="{!contact.nominate__c}"/>
           </apex:column>
           
      
      </apex:pageblockTable>
     
  
      </apex:pageblock>   
       </apex:form>
</apex:page>