User blog comment:Mighty No. 9/Video: Test Results and Moving Forward/@comment-452-20140517022819

Since the addition of the video sidebar, fewer new people are joining the chat.

I can only assume that this is because the chat module is further down the page, and fewer people are noticing it.

edit: because I'm a fan of actual data: The 8th is the first day I saw the videos sidebar, so I assume this was the day it was enabled. To give you a better idea of the "norm":
 * 8-16 May: 5 users: 3 regulars, 0 first-timers.
 * 1-7 May: 14 users: 4 regulars, 4 first-timers.
 * 24-30 Apr: 15 users: 5 regulars, 6 first-timers
 * 17-23 Apr: 17 users: 5 regulars, 7 first-timers
 * 10-16 Apr: 16 users: 5 regulars, 8 first-timers
 * 3-9 Apr: 12 users: 4 regulars, 4 first-timers

It has never been a "busy" chat, and activity over the last month is a little below average, but since the introduction of the video module, activity has really dropped.

Of course, this is just the results from a small wiki with a chat with rarely more than 5 people at a time, so it would be good to know whether other wikis have noticed a drop in new people joining.