At some point I do wonder if the free plan (funded perhaps with VC money in the past) will need to change. Unmetered DDoS protection for free etc, there is a mismatch there in terms of cost to revenue. All the unlimited bandwidth places faded away at most other providers - or they end up with hidden charges. One complaint I have is folks talk about cloudflare's free pricing, but if you try to build dropbox using their free bandwidth they of course call you up, so it's not really unlimited free traffic - and I just end up liking places that are more clear / upfront on usage limits