I've validated some speech and like others I sometimes found strong foreign accents from non native English speakers (just like I am) so I tried to be neutral at least with the sentences I could understand, which luckily were the vast majority. If however I may offer a suggestion to improve the service, some information should be given about how to produce good quality recordings before the user starts contributing, what mic to use and how, sound levels, equalizing, background noise etc. Some of the recordings were truly awful quality wise and probably would generate false negatives (ok, an AI should learn to sort those out, but maybe later). Also, some recordings although correct were stuttering badly probably due to network congestion on the contributors side; it could come handy a way to also tag those sentences as "correct but stuttering" so that in the future the AI could also learn how a formally well recited text would sound if coming from a problematic connection. Tagging (scoring maybe) could also be useful for sentences where just about everything is correct save for a single word or part of it. For example, one sentence was "The party was a Sikh-centered political party in the Indian state of Punjab." but the woman said "in this Indian state". I didn't mark it because either way would have been not entirely accurate.

Nice initiative though.