I hope that ALL bounties and airdrop will require proof of autentification here on forum so multiaccounts and people that uses other accounts are out. I always receive email that I joined airdrops with other credential because some multiaccount uses my email for that.. I try to block him but there's no way unfortunately.
IN my experience take a look if token is listed on a good exchange, that's a good signal that token is wanted and appreciated from community... if token is listed only on poor exchanges after some months I would sell it
you forgot your private key? I'm sorry but there's no way to recover your private key so you have lost your funds..... it's better to store your private key in a safe place and make copies ot that.
I think that JAXX is a very easy to use multicurrency wallets. It also supports many ERC20 tokens and can be use in mobility (ios, android) or with google chrome extension.
Bounty hunters play .a very important role nowadays like bounty managers because they will give a big boost promoting the ICO so it's very important to check before team and if project is not a scam otherwise your reputation can be damaged.
I choose to join only bounties that are managed by a well known and trusted bounty manager like Wapinter, BTCLTCdigger, Newslikw, sinatra12. There are also many more but I prefer these ones because I never had a problem with them. Choosing the right bounty manager is very important because even if project is good if bounty manager is bad you will just waste your time...