This snapshot is showing a weeks worth of posts, I agree comparing just two weeks week on week does not signify a trend, but over time a trend does emerge.

We have been consistently seeing a downward trend for the past few weeks, and this week the drop was quite stark.

Thanks for the suggestions on using rolling averages to smooth out seasonality. These are useful suggestions and worth considering. Ill have to figure out an appropriate time frame to smooth over if I show this. I want to keep the snapshots to a weeks timeframe to keep the analysis easy to access so I will see if I can build in some sort of running average overlay to the charts.