It's the risk we run when playing in this arena. Lots of space for imitation/theft -> plausible deniability -> lean & favoritism for the "big boy". Fear of this happening used to cripple me and my efforts in the past.
At least in this case there's plenty of press that "endorsements" was on Zerply first.
I wouldn't let that fear put you off if you have an idea your really passionate about. At the end of the day the success or failure of a startup/idea is in its execution and not exclusivity.
At least in this case there's plenty of press that "endorsements" was on Zerply first.