Making entry for a user in elevated privileges mode

Scenario:
This is quick snippet to show how to make a entry in Custom List on behalf of the user , even in elevated privileged mode.

Code:

 SPContext.Current.Web.AllowUnsafeUpdates = true;

            SPUser user = SPContext.Current.Web.CurrentUser;
            string weburl = SPContext.Current.Web.Url;

            SPSecurity.RunWithElevatedPrivileges(delegate()
                        {
                            using (SPSite site = new SPSite(weburl))
                            {
                                using (SPWeb web = site.OpenWeb())
                                {
                                    SPList list = web.Lists["test list"];
                                    SPListItem listItem = list.Items.Add();
                                    listItem["Title"] = string.Format("I am {0}", user.LoginName);
                                    // Modified By
                                    listItem["Editor"] = user;
                                    // Created By
                                    listItem["Author"] = user;
                                    listItem.Update();
                                }
                            }
                        }
                );
 SPContext.Current.Web.AllowUnsafeUpdates = false;

Update: My good friend Venkat mentioned that in case of update we should not update 'Author'