Is worth to upgrade Wordlinx ?

Tweet

I'm a standard member of Wordlinx and already earned $ 1.5 without any refs in less than one month. Even though the payout is high, I don't have any worries, since Wordlinx is a reliable old player in PTC :) But, right now I'm considering to upgrade, to boost my earnings on it. But still I'm wondering if its worthy or not ... I need your suggestion on this. If any of you are an upgraded member of Wordlinx, how many ads are available to clicks in one day ? Any help will be appreciated :)