For altcoin bounties find a bounty here Bitcoin Forum > Alternate cryptocurrencies > Marketplace (Altcoins) > Bounties (Altcoins) (Moderator: mprep) >
For bitcoin bounties go to - Bitcoin Forum > Economy > Marketplace > Services
Apply on a few campaigns as your application may not always be accepted. Good luck!
And what are the rules for the decision of the application? For example, just luck or someone with more weight in the forum?
Thanks
They usually accept you as long as you meet the requirements and you applied early. Like in social media campaigns, you should meet the minimum no. of friends/followers. Just carefully read the requirements before joining.