The best way to measure growth on the LightSwitchHelpWebsite.com is by looking at the number of members who join each month. Currently there are over 6000 members.
As you can see from the chart, growth was declining for years. I attribute this to the uncertainty around Silverlight. In the past, LightSwitch only created Silverlight applications.
This year, the Visual Studio LightSwitch team released the LightSwitch HTML Client.
As you can see from the chart, things have changed dramatically