Chronos
I have the following thoughts:
Accessible Anywhere
Most cryptocoin mining requires specialized hardware, but Peercoin minting can be done on any computer. Minting is energy-efficient, because it is based on the Peercoins you hold, rather than on your processing power.
I would suggest changing the title to “Mint Anywhere”
I think the debate about “any computer” versus “any device" misses the point that we need to get across, which is that any person can do minting. I think the best way to convey this is to mention the “home computer”. The home computer is the most common computer and virtually everyone has one – so referring to it instantly communicates the message that minting is for the masses. Perhaps you could amend the first sentence:
Most cryptocoin mining requires specialized hardware, but Peercoin minting can be done on any computer, including your home computer.
Or
Most cryptocoin mining requires specialized hardware, but Peercoin minting can be done on any home computer, as well as mobiles and [insert whatever].
Network Security
Each time you receive a minting reward, your coins help guard the network. To reliably attack the Peercoin network, a malicious user must control the majority of all minting coins, which would end up harming his own investment".
Suggest amending the first sentence to: “Each time your minting generates a block, your coins help guard the network”.
The reason why I suggest “generates a block” [or whatever is accurate] is because I think there should be some reference to what minting actually does, that it adds to the network. That then leaves the way clear to discuss the reward in the final paragraph.
Exponential Growth
Earn 1% annually on your coins, no matter how long it’s been since you last minted. Coins are first eligible to mint 30 days after they have been transferred, and after 80 days, their chance of success is maximized. If you mint more often, your earnings will compound!
“Exponential Growth” is too strong for 1%. Perhaps you could rename this "Your Minting Reward”
First sentence, suggest adding a bit to the beginning: Minting earns you 1% annually on your coins.
I don’t follow what then follows: “no matter how long it’s been since you last minted”; this distracts from the clarity of 1% annually. Perhaps just remove it?
I think it is 90 days rather than 80 days
I wonder whether the final point of compounding should be played down. 1% is small enough, and so we are talking about getting a fraction of that 1% early, to get just a bit more than 1% a year - this is more of a detail than a selling point. Perhaps you could say:
“The more often you mint, the earlier you will receive your extra Peercoins, and start earning interest on them, too”