First time to be seen: 50.03 percent of nodes running core 0.13.1 and 0.13.2! Plus those few 0.13.99, the majority of fullnodes is pro-segwit!
Segwit is a new type of transaction that solves a lot of issues and allows for a lot of new features to be added more easily/safely.
To name a few things it does... segwit transactions reduce the amount of space needed by the main blockchain as the witness data that can later be discarded is put in a separate data structure.
Segwit transactions also solve malleability issues which is a serious headache for developers building ontop of bitcoin. It also allows for future expansion of new features such as making bitcoin truly fungible which needs to happen at some point. It also makes the Lightning Network that is in development are much cleaner solution.
What they are saying is the number of computers running the full bitcoind client that is capable of understanding and issuing segwit style transactions is over 50%.
The marker for it actually being usable however is the number of the mining nodes supporting segwit (i.e. bitcoind clients but they are actually running mining hardware), this needs to be > 95% before segwit transactions can be activated to be safe but this is still stuck at 23%.
https://coin.dance/blocks/proposalsGuess what OP is trying to highlight is that most users are keen on seeing SegWit approved but the miners are still holding off. I don't know why they are holding off adopting it but I guess they have their reasons...
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