By joshua 
For the benefit of everyone sharing the mtn freebie site, this is to let you know that mtn has a database of its customers and will normally send an sms to all its customers on this promo. MTN will not ask you to share their link to benefit anything from them if they want to reward you as a customer.
For sake of clarity, this is the official mtn website address: https://www.mtnonline.com/ which is different from the clone used to deceive unsuspecting mtn users.
This link : https://bit.ly/MTN-20years-anniversary-offer and this one : https://mtn-promo.xyz/ are hoax domain that will receive your personal info and the website administrator(s) will happily get your info to hack your sensitive data not excluding your bank account(s).
Bewarned and beware when you see freebies that requires you to perform certain tasks.
NB
ALWAYS check the address bar of your browser for the followings;
1) https and not http
2) domain name server ie. .com, .org, .gov, .com.ng, .org.ng, .in, .uk etc. Once you see any domain server names outside the above, go to Google and type the main name of the site you want to access, this should give you the verified idea of what information that is safe for you or ask any tech savvy person you know.