What you think about timeshare?

I keep on getting phone calls from this company, saying that i win a 4 round trip tickets from a pet convention which i went and submit forms. They kept calling and left many messages. today, I finally had it with the phone calls and answered. The person told me they got my inf. from the forms put in at the pet convention center, and i am the lucky 3 percent who win 4 round trips ( worth 2000.00) and all i have to do is come down to there company with ID and stay for 90 minutes tours of there resorts. The person gave me a website www.fantasearesorts.com and sure you know it is a timeshare. what do you think ? It is 2 good to be true right?