PoT = Reward by making more transactions = Spending coin
PoI = Securing the network, so keeping up a node online to secure it.
This is what I think.
That is untrue. What makoto means by node is actually an account.
(you need to think of transactions as a huuuge graph, where accounts are nodes,
and transactions are links between nodes)
I don't know what PoT promotes, so I can't tell if they are similar...
edit I see fluttercoin is a mixture of PoW,PoS,PoT, and based on bitcoin (and most likely peercoin) and PoT indeed promotes Transactions,
not how they are made, so it's basically payback system in crypto currency world.
In PoI, it's not transactions itself that are important (as one with many NEMs could make a lot of tiny transactions),
what matters is with who you make them, and who makes them with you.
What you've described is not Poi, but PoN (Proof of Network).