I organized 4 giveaways, Vyper, Kingsumo, Upviral,Viralloops. The one and only PRO of Kingsumo was the one-time fee and no-recurring monthy fee. Less than 35% if subscribers opens my emails - and usually my CLICK rate is over 40%+.
Maybe it's worth it when you sell something for lifetime then you change the model. just like Kingsumo is doing now... Beside that, lots of freeloader crappy leads, lack of positioning. This entire model sucks, lots of hype and doesn't provide value.
I love the concept and the look but I've given it a quick test and there may be a flaw. I don't think there is any verification to check that people have actually carried out the extra entry actions (liked, followed, shared on social for example). I've entered a competition, clicked all the options to share and like on social so I can get more entries. However I've not actually followed through and shared or liked anything and it has still counted the extra entries. It would be great to get verification of the actions to make sure people follow through and really help the giveaways gain more traction.
I bought the lifetime license 3 months back. Are they going to charge me monthly now to get the new features? Feels like a bad deal.