As with any community, there are some acronyms and lingo that get used a lot around here, and when you’re new, it might as well be a different language. So, here are the most common ones, explained. If you’ve used forums before, or are an old hand in the IM industry, some of these will be familiar. But for those who are entirely new, it’s handy to know what they all mean. Edit 29 April 2019: You guys have come up with some great suggestions to add to the list, so I've updated this post accordingly. Thanks to @Takurah, @shafi432, @Davidnike, @Bruno Adas, @AUSTINS.CLUB, @BrainAkeju, and @reuse for your contributions. Acronyms AMA: Ask Me Anything AMP: Accelerated Mobile Pages AR: Alexa Rank BHW: BlackHatWorld BL: Backlinks BST: Buy Sell Trade (this is the old name for Marketplace threads) BTC: BitCoin CF: Citation Flow CPA: Cost Per Action CPC: Cost Per Click CTR: Click Through Rate DA: Domain Authority EPC: Earnings Per Click FM: Flow Metrics HAF: Hire A Freelancer IM: Internet Marketing IMO: In My Opinion JV: Joint Venture LF: Looking For OP: Original Poster ORM: Online Reputation Management PA: Page Authority PBN: Private Blog Network PPC: Pay Per Click PPI: Pay Per Install PV: Phone Verified PVA: Phone Verified RD: Referring Domain REQ: Required SEO: Search Engine Optimisation SERP: Search Engine Results Page SMM: Social Media Marketing TAT: Turnaround Time TF: Trust Flow TTF: Topical Trust Flow WTB: Want To Buy Jargon Conversation: This is what we call private messages. So if you want to send a PM, you need to start a conversation. Marketplace thread: For $30 you can create a thread to sell your service. Mod: short for moderator - the volunteers and staff who keep BHW in line.