Of course that'll happen and I'm well aware, they are not my demografic so I want them solely for an innitial boost while I'm targeting my actual one. In that sense it doesn't hurt me losing my spanish speakers followers. My question is, Will that hurt my English speaking market? maybe likes from spanish speaker will make Facebookk think that that's my audience and change the algorithm or somehitng like that?
Also a Facebook page should not have selling purpose IMO, it is made to grow, mantain and engage with your community ins't it.
I was also thinking about using the "social locker" plug in which "locks" content on your site. To read a full blog post, people have to like or share on facebook with a native button to continue reading.