Pure speculation: This fits in well with other sdk platforms that complete the loop for advertising companies focused on mobile. Burstly (mobile ads) bought Tes

Pure speculation: This fits in well with other sdk platforms that complete the loop for advertising companies focused on mobile. Burstly (mobile ads) bought TestFlight (beta app distribution sdk). Flurry (mobile ads) gives away a free analytics sdk (Flurry Analytics). Now Twitter (ad company) has Crashlytics (crash reporting sdk). In each case, the free offering is a trojan horse to get insight into tons of aggregate data in order to power the advertising/recommendation engines of the parent company. The only way I can see that this makes sense is if Twitter is going to become a web/mobile-wide ad company and start offering ad units across the web and/or other apps (like AdSense but with tweets as the ad unit). There could be dozens of different/better reasons that this makes sense, but I can't see them at the moment.