Yes upgrading your account is advisable but only if you have many active referrals but if you don't have at least 10 active referrals that has a daily avg click above 20, wait until you have those referrals then upgrade because when you upgrade, most ads will only earn you $0.002 per click and 1 or more is $0.011 per click and without referrals as an upgraded member will only lose you money.