A question about WordLinx

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I have been a member of this one for a while but only get maybe one link a day. I am also a member of ClixSense, Financial Freedom Ads, and NeoBux. This is not the only PTC's I am a member of but the ones I have under this category. I have upgraded ClixSense for two years now for $10/year and it really pays for itself BUT my question is if the other three are worth upgrading. Thanks for your input! God bless!