I wonder how they measure that...
Again I don't want to speak for thelonelycoder, so please just take this as my opinions only.
The easiest way that I know of is views on the thread.
Currently this thread has about 2,000 views.
You can also use the amount of replies on the thread.
Which this thread has 43 replies (44 when I hit submit)
Another method, although less direct, is stars on GitHub.
Which this project is at zero so far, stars on Github is not so related to SNB so it's less likely he's using that, but stars does show a good indication that people are trying to find/pin the project.
I'm sure the mods of these forums have additional tools, since XenForo is extremely good behind the scenes at tracking everything.