Should I be worried about this Facebook thing?

[Jordan]

Ok, so basically I'm on this dating site (mylol) and its kind of a small community (almost 2000 people) and they had this add where you can "like" mylol and ull get 2 days free membership (you usually have to pay for special membership where u can see who viewed ur profile). When I clicked on the add it just took me to the Facebook homepage and asked me to log in so I decided to log in and it said congrats u now earned ursel two days of free privileged membership and ure enough I did cuz now I see who viewed my profile. However I'm knd of worried......does mylol have my Facebook username and password now? Can they hack it? Help please????

[Pearl L]

its possible they got your username and password, i would change them, ive had to change my passwords on all my emails recently cause someone was hacking into them and it got so bad that yahoo wouldnt let me send an email until i changed my password