[khamoud]

I think I’d like to be able to see big shifts in sentiment or at least be able to graph it over time and compare it to the overall market.

But like you said, this is also just a hobby project for me.

[chidog12]

Yep, that's what i did. Every 15 min I would measure the sentiment of given topics, normalize the messy data and plot them. you can overlay this against a time series of price data.

Twitter also has a historic tweets api. It's more work, but you can backtest as well.