Randomización de llamadas de usuario

$(document).ready(function(){
$('.usersrandom').each(function(){
var users = ["/u2", "/u3", "/u4", "/u5", "/u6", "/u7", "/u8"];
var size = users.length;
var a = Math.floor(size*Math.random());
var b = Math.floor(size*Math.random());
var c = Math.floor(size*Math.random());
var d = Math.floor(size*Math.random());
var e = Math.floor(size*Math.random());
var $self = $(this);
/* Tendrías que repetir esto tantas veces como variables de randomización tengas */
$.get(users[a], function(data) {
var randomAvatar = $(data).find('.psavatar').html();
var randomUsername = $(data).find('.psname').html();
$self.append('<div class="userrandom userrandom-a"><div class="ur-avatar">'+randomAvatar+'</div><div class="ur-name">'+randomUsername+'</div></div>');
});
$.get(users[b], function(data) {
var randomAvatar = $(data).find('.psavatar').html();
var randomUsername = $(data).find('.psname').html();
$self.append('<div class="userrandom userrandom-b"><div class="ur-avatar">'+randomAvatar+'</div><div class="ur-name">'+randomUsername+'</div></div>');
});
$.get(users[c], function(data) {
var randomAvatar = $(data).find('.psavatar').html();
var randomUsername = $(data).find('.psname').html();
$self.append('<div class="userrandom userrandom-c"><div class="ur-avatar">'+randomAvatar+'</div><div class="ur-name">'+randomUsername+'</div></div>');
});
$.get(users[d], function(data) {
var randomAvatar = $(data).find('.psavatar').html();
var randomUsername = $(data).find('.psname').html();
$self.append('<div class="userrandom userrandom-d"><div class="ur-avatar">'+randomAvatar+'</div><div class="ur-name">'+randomUsername+'</div></div>');
});
$.get(users[e], function(data) {
var randomAvatar = $(data).find('.psavatar').html();
var randomUsername = $(data).find('.psname').html();
$self.append('<div class="userrandom userrandom-e"><div class="ur-avatar">'+randomAvatar+'</div><div class="ur-name">'+randomUsername+'</div></div>');
});
});
});