I am certainly not an expert, but I can give you a base understanding of some of them. There are much more experienced people in this forum that can give you a better description:
Power User: Link at the top of the forum that currently says “Shop”, has a url that is “www.anker.com/poweruser”. That URL now redirects to the Anker Store, but that used to be an actual webpage. This is where “Power Users”, a title given to users that were designated by Anker to test items (AKA my title under the username), were given the opportunity to give in-depth reviews and post those reviews in the forum, their blog, YouTube, social media, whereever their medium was preferred. However, to be part of the Power User program, it was required that the end user give a review; so it was NOT just a giveaway, it required people to actually give a rip and give it a good test. It gave opportunities to everyday Joe’s to test and review items to give their honest feedback. This, by far, is what I miss the most. Not because of “free” stuff, this gave the opportunities for everyday users to be heard and to give a good perspective of the products Anker produced. This has largely been replaced by Anker sending these devices to Influencers and Professional Testers. This is not ALL bad, it certainly has it’s place. However, you cannot possibly get a real world experience unless you have real world people doing real world testing. I truly miss this and probably the most frustrating part of all of it for me.
Testing Club: Similar to the Power User section, this came after the Power User section dwindled off. It still allowed for testing of devices, however it was much more open to all and requirements changed. Instead of more or less being vetted by Anker, it leaned towards those who has social media connections and presence. It wasn’t required to post to social media, but was HIGHLY recommended, and testing seemed to favor those that did, specifically hashtags and other social media engagements. Rules are here:
https://community.anker.com/testing_club/rules
This died a slow death after Anker moved fully to social media based testers and focused on influencers and professional testers in 2020.
PowerDraw/PowerBucks: The PowerDraw section allowed you to enter for a chance for a giveaway product. You earned PowerBucks by participating in the forum in various ways. I never fully understood this and often confused it with Soundcore’s forum (which is a WHOLE other thing I’m not going to get into), so I’ll leave this to others. PowerDraws stopped in 2021.
Feel free to DM me if you have any other questions or want clarity on any of this. Hope this helps!