Bewilderment over why Crashlytics sold faded quickly after Xconomy first reported that the deal was in the range of $100 million. Sources with knowledge of the deal tell us that it’s in fact a bit more than $100 million, a mix of cash and stock. And we can confirm that it – not Bluefin – is Twitter’s biggest acquisition to date.

We’ve also confirmed from multiple sources that the return to investors from the $1 million Crashlytics seed round, led by Flybridge and joined by Baseline Ventures as well as a number of prominent Boston angels, was 11x. No word on the multiple for the $5 million A round last April by Flybridge and Baseline. While it certainly won’t return either’s firm’s full fund, no doubt a very solid IRR there too, especially with how quickly the capital was returned.

I'm not even sure what Crashlytics was doing that was worth so much so fast.

Google's acquisition of Applied Semantics was about the same price, $102 million.

http://en.wikipedia.org/wiki/List_of_mergers_and_acquisitions_by_Google