Of course, there are campaigns which accepted Junior Member rank to join, so you can definitely.
A junior member can join signature campaigns and participate in some specific bounties.You can also look for other people on the platform for people who are scam and report them.
Users will get postcounts and acitivities simultaneously with their threads, despite of they join campaigns or not.
You will earn post count and activity.
Why not?
Participating in bounty campaign was not so good idea.
The fact is, most of campaigns have payments in BTC require higher ranked members and minimum merit points to join.
Shit posters almost have not have chances to join BTC-paid campaigns.
If you want to earn btc in jr member, you must join first sig camp. Earning merit was not a easy thing.
Good campaigns with prestigous managers will manage their campaigns like this, only accepted participants with good posthistory.
Also, good campaign managers check the past posting history before accepting members.