This is a good initiative from the admin. Doing such task would keep people start having the mindset of doing charitable foundation and lots more and to some point not minding the rewards of doing it.
I think this should be a lifestyle and not a thing of action whenever such comes up or a thing of this nature is discussed on the platform or else where. But however, this process should not be abused. If anyone wants to engage in the exercise should do that wholeheartedly and forget about what ever seems to be the rewards. Yes of a truth the admin already announced a reward for it but if one should do that, it should be willingly and whole heartedly.