How to prolong lithium-based batteries

How to prolong lithium-based batteries: "A lithium-ion battery provides 300-500 discharge/charge cycles. The battery prefers a partial rather than a full discharge. Frequent full discharges should be avoided when possible. Instead, charge the battery more often or use a larger battery. There is no concern of memory when applying unscheduled charges.

Although lithium-ion is memory-free in terms of performance deterioration, batteries with fuel gauges exhibit what engineers refer to as 'digital memory'. Here is the reason: Short discharges with subsequent recharges do not provide the periodic calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30 charges corrects this problem. Letting the battery run down to the cut-off point in the equipment will do this. If ignored, the fuel gauge will become increasingly less accurate"

Comments: Some say to run your EVO battery to zero to "calibrate". Here is a somewhat official reference for doing it. My EVO has good battery life but I'm doing it once anyway. There is a caution to not do it more than once a month. If you can't trust "BatteryUniversity.com" who can you trust. Is that Ivy League?