The Peercoin network has now surpassed 400 full single nodes. Check this updating chart here: http://cryptocities.appspot.com/peercoin-fullnodes-daily-stats.html
Remember, you can earn 10 PPC by setting up a full node here: http://www.peercointalk.org/index.php?topic=2800.msg25048#msg25048
Has anybody a rational explanation for such an increase? Or should we fear some kind of attack being prepared?
Mh. NuBits is a month old now. Maybe a lot of people bought into peercoin beforehand and are now trying to mint?
I just posted my latest measurement of how many percentage of all peercoins are minting. There is a ~12% increase from July (from 10.4% to 11.6%). From the plot in the OP, the increase of number of full node is about 60% (from 255 to 408). This means the increased full nodes don’t have a lot of coins in them.
There was a similar increase on full nodes from 261 to 349 (net increase 88) between Sep. 9 and Sep. 26;
The current increase on full nodes from 331 to 408 (net increase 77) between Oct. 17 and Oct. 27.
Everything was fine in previous increase and I just hope everything will be fine for the current increase.
The previous increase was not related to NuBits since NuBits was published on Sep. 23.
Definitely looking strange. Could some Nubits insider chime in and tell us if this increase is somehow Nubits related? Thanx.
In order to prevent a double spend attack, which is more crucial : number of nodes or the number of coin in minting nodes, sparsely distributed?
Number of coins distributed between different minting users is much more important for security, as far as I understand.
Definitely looking strange. Could some Nubits insider chime in and tell us if this increase is somehow Nubits related? Thanx.[/quote]
Could it be related to PeerUnity client? Looks like 80 new peerunity full nodes have been added since september 15.
I think the dip in late July-August is related to holiday time. The up shoot in September is related students return to school.
This is great! More full node means more attention for peercoin.
more people coming to the party.
Party of Sunny (PoS) 
I think the dip in late July-August is related to holiday time. The up shoot in September is related students return to school.[/quote]
The PeerUnity client coupled with students returning to school is the most likely suggestion I have heard, but I don’t know the specific dates of school returns. It appears there are two surges, the second of which we are still in now. Up, up, up. Is there anyone - students or others - having recently created full nodes reading this? If so, could you tell us who you are, and how you became interested in creating a full node?
The possible attack query should not be set aside until we know more. What attack scenarios, if any, could be supported by such data?
I would think the non-full nodes picture would be helpful also. Mably, do you know if non-full nodes (complete Peercoin nodes but just without port forwarding) have increased in the same large rapid percentages?
Is there any geographic centralization to this rapid full node growth?
Nodes without port forwarding do not accept incoming connection hence are difficult to detect. Their effect can be felt collectively on minting difficulty. The actual difficulty measurement was reported in a post above.
I just found out (after opening and closing NU wallet many times) that NU wallet becomes full node very quickly without setting anything
in my router.
Sadly, Peerunity 0.1.0 wallet is very slow to become a full node IF becomes one!
Many times after my IP changes i have to reopen Peerunity in order to become again a full node!
Can Peerunity devs check this and correct it? It would be nice to work like NU is working.
thanks 
How many nodes are there currently?
I wonder how ethereum plans implement PoS.
Within one’s wallet,
At which price is it fair to mint?
At which price is it not and use it for transactions?
But actually you cannot mint if you dont back your money up by “something” gold or ppl.work
And what if 99% of.wallets with 99%of coins decide to transact. There s almost nobody left to mint.