Using google forms as a way to submit weekly/daily reports is both good and bad. Good in way that it helps lessen the numerous amount of reports flooded on this forum on a daily basis. Bad in way that it could be exploited by many cheaters by simply submitting reports by other participants and making it their own.
What if requiring every participant to post a BTC signed message describing which campaign they participate and what address they will use as a proof of participation, and then the report must send weekly via the form? Of course, the sheets should be made public.
Recently my account and my articles were submitted by someone but using a different address, luckily I know that so I can inform the bounty manager. But it is impossible to watch every bounty thread and reports.