Welcome to Flyertalk, Cristhian.

This really does seem to belong in the S.P.A.M. forum -- "Sites for Alternative Points and Miles" -- as that forum description seems to pretty neatly summarize what you're talking about.

Also, it seems you've found the SPAM forum for this offer as well.
http://www.flyertalk.com/forum/Forum...ML/002730.html
http://www.flyertalk.com/forum/Forum...ML/002731.html
http://www.flyertalk.com/forum/Forum...ML/002732.html

Since you've started (3) threads on the same topic as this one, I'm going to close this one here.

For future reference, cross-posting is frowned upon. Once does seem enough.

Thanks for your enthusiasm, though! http://www.flyertalk.com/forum/smile.gif

Best regards,
Gary
aka gleff
MilesBuzz and Delta moderator