do not, they are announcing this kind of giveaway to attract users to follow their twitter account. but in the end you will get nothing, I did it before for months and I did not get anything from them. after they get a thousand followers, they will change their username and create another account with the same strategy.
what you say makes sense, anyway I don't see a link on their twitter profile that includes a project website like most other projects. this leads to scam just to find followers