Offcourse it's not needed. They aren't doing any giveaways now. Maybe 5-6 years ago there was giveaway where they asked to post Bitcoin addresses on this thread. I'm always wondering how people find these old posts about giveway, because I see them posting Bitcoin addresses on Freebitco.in threads quite often

Try here: https://bitcointalk.org/index.php?board=238.0
Just choose the project you want to participate in. Read their white papers, study the conditions of distributing the rewards.. and go on promoting! )
You can also find some promising projects here: https://icodrops.com/whitelist/
Good luck! )

Airdrops really big trap to collect the data about you. Most of airdrops are going like that. If you want to make money on please check the manager who is part of bounty and join in that campaign.
It will be really helpful way to find the more money because the project knowledge very much understanding about ICO and all will allow us to make money. If you join telegram campaign that is very much easy way to get the tokens.