ICO - Initial Coin Offering. Similar to IPO. Instead of shares, you invest in the crypto tokens of projects which may represent a variety of things

Bounty - A reward that is offered to those who participate, promote and influence a project's outreach

Whitelisting - Some ICOs require you to be registered before investing. This is called getting whitelisted

Airdrop - Free tokens awarded to holders of a cryptocurrency or token, usually when a new coin is forked from the one you hold

AMA - Ask Me Anything(technically a broader term, not only applied to cryptocurrency)

Hard Cap - Maximum amount of funds that can be received in a crowdsale

Soft Cap - Minimum amount of funds to be received in a crowdsale for it to be regarded a success. ICOs which fail to reach their Soft Cap tend to reimburse their participants

Crowdsale - Fund-raising event. There just different ways of doing it. Usually, there's a pre-sale(s), which may be private, with bonuses followed by a public sale

Signature Bounty - Reward for lending your signature space to a campaign, which varies based on forum rank


Feel free to ask if you have any other questions.