What really impresses me about Viber is the way they went all out and splurged with an honest to god penultimate "e" before the final "r". Most dot-com companies would have settled for "Vibr", but they went the distance and bought an authentic luxurious vowel, precisely where it was called for, without going overboard and throwing in a sometimes-vowel "y" in place of the "i". Very bold and straightforward spelling, I must say. Color me impressed!