Hello .. there's a sudden inexplicable jump in my reputation .. it was 13k+ few days ago and now suddenly it's 15k+ .. but the rep tab isn't showing any changes either. I am confused!

@r9m The way the system gives reputation to askers has changed, and a retroactive recalculation happened. See here for more information.

@AloizioMacedo I see! :) Many thanks for the info!