I'm interested in how/why a couple of the biggest channels on Freenode have been left out: #bitcoin-otc with 484 nicks and #bitcoin with 1179 nicks at the time of my post. What gives?
I'm not sure why you gave us a screenshot, rather than just typing out the network, and how many users it has on the channel. Feels like it'd be a lot less work! :)
Number of people on channel is in no way a good indicator of activity. There are very active channels with 2-4 people and totally unactive channels with even hundreds of people.
Yeah the number of people LOGGED in is totally different then active. I am always "logged" in just so I get to keep the cache of the dialogues. If one channel has 100 people you might be there all alone.
Here's a small sample from the FreeNode IRC network, from right now:
And that's just one (admittedly popular) IRC network. There are 6 networks with over 10,000 users, and hundreds of smaller networks.[2][1] - #startups - the HN channel!
[2] - http://searchirc.com/networks