do my replies become less valuable (in terms of $moxie) when I post more of them?

Some Airstack concepts and how they related to Moxie:

Far Score (fka "Social Capital Score" or SCS): a score for users based on "their relative influence in the Farcaster network" (unclear exactly how it's calculated but likely some combination of follower count + followers' Far Scores + engagement), dynamic score that only ever increases

Far Rank (fka "Social Capital Rank" or SCR): a ranking from 1 to N of Farcaster users based on their Far Scores with 1 being the highest in the Farcaster network

Cast Score (fka "Social Capital Value" or SCV): a score for casts (and replies) based on the Far Scores of the users who engaged with that cast, different weights for type of engagement (likes vs. recasts vs. replies)

$MOXIE is rewarded daily for each cast based on its Cast Score (1 $MOXIE for every 1 "point" of the Cast Score)

Far Scores (and Far Rank) and Cast Scores are concepts that are independent of but used by Moxie, they can also be built on separately by developers via Airstack's APIs

No because your Far Score (score based on your relative influence on Farcaster), which is what Cast Scores aka Moxie earnings are based off of, only ever increases

/new-york by day 🗽 /latenightcrew by night :) Fan of eating tacos and bringing people together, often at the same time 🌮

No because your Far Score (score based on your relative influence on Farcaster), which is what Cast Scores aka Moxie earnings are based off of, only ever increases

https://warpcast.com/zinger/0x4b07f31a

Animations
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Send payments on Farcaster paycaster.co.         Tag me (@paybot 100 degen) to pay a user

Contrary to all other answers, I actually assume there is some sort of a cap. The only way to find out for sure is to ask Jason.

Looking at Airtex, I don't think that's the case.

Nope, value remains the same 

It's measured by FarRank/SCS

No man , it's just because of your FT holders earning , as I figured, it's more than 20%

Nope, I think it become more valuable as your far rank go higher

No, your power to give (=Far Score) does not decrease based on your like, recast, or reply. So, nothing to worry about!