Or just a version of outlook that has a usable search function. As much as I don't like being dependent on Google, at least I know that I find all emails I'm looking for in Gmail. That's definitely not the case for Outlook, even recent emails can be very hard to find (we're at the newest Office version at my job).

Seriously, I moved from a G-Suite org, where I was actually a G-Suite admin, to an Outlook based MSFT shop and the difference is staggering. Skype for Business alone is horrendous, but combine that with Outlook and internal communication becomes a nightmare.

Weren't there some bots doing sentiment analysis on twitter? Also, these were discovered then exploited at one point to cause a rapid drop in the stock markets.

Sentiment analysis was a big topic and is still being used. But results are very specific. Most investors won't tweet while they're losing money so the short term information gain is small.

Where it can help is to determine the state of the economy. Same as with image recognition for satellite pictures (traffic patterns, footfall at stores), those indicators can give you a faster idea if something's going wrong with the economy than classical indicators. But I have yet to see an accurate one.

Any links with more info would be appriciated :)

Microsoft should just analyze trends of LinkedIn links and job postings correlated with people leaving companies.

Like Google isn't already doing that?