Some of those sites you mentioned and several other exchange sites have very poor retention or none at all. I would stick with buying YouTube views. That way you can always get what you paid for.
I bought VPS from servarica for $7 monthly. I run enhanceviews,shareyoutubevideos,u2bviews, hitleap, empireviews,websyndic non-stop and it's much better than buying views..![]()
i think you can choose your retention on enhanceviews .
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