Many of us are familiar with
this site, but if you aren't, you'd better make yourself now:
At the moment there are over 540 bitcoins locked up in Lightning Network payment channels. You may think it is not really a big deal, but it is the change that counts in this case. And if that number continues to expand like before and still more so if such growth will be explosive in the future, this metric will certainly start to be taken into account, if not already, and thus affect Bitcoin's market price. It is not some bullshit measure like the blocksize which gives us absolutely no clue about what's going on right here right now. In fact, I very soon expect the Bitcoin Cash proselytes (whatever flavor) to be eating their hearts out in envy for the lack of such a number
Indeed, you can claim that the number of payment channels and bitcoins doesn't reflect their actual use and you may be right to a degree. But for market it is irrelevant even if it is totally true. These coins are not traded anyway, so they do affect the balance of supply and demand, and as I said, when this number explodes along with the amount of bitcoins used in Lightning Network as a value transfer vehicle, the effect will be felt strongly. In this regard, Lightning Network stats are objective and should not be discarded. Beyond that, there's also psychology at work as people will see with their own eyes that Bitcoin does make a difference as a means of payment and builds real value through that
So don't forget to visit that number to see where the market is going