Exactly; the OP was likely phished and the people who did this are making money by having these accounts like on their behalf.

I remember seeing in my feed that many of my liberal friends had "liked" Romney prior to the 2012 election. I saw this article come out around that time: http://thecentristword.wordpress.com/2012/08/05/mitt-romney-... and people in the comments described a similar issue.