The $0.01/GB inter-availability-zone data transfer cost can be a killer for misconfigured workloads. It's a shame AWS doesn't make this more clear on their pricing page. I've seen people run Spark clusters across multiple AZs, incurring a huge costs whenever a shuffle happens.
They need to de-emphasize the blue checkmark. The eye is drawn towards it, and it lends tweets a false sense of authority. I'm not sure what a good solution is, as it is necessary to differentiate authentic accounts from fake ones, even for people who are not super-famous.
I'm surprised transfer learning via fine-tuning large transformer models hasn't taken off more in the public consciousness a la image recognition models. In my experience, the results can be staggering with very small amounts of training data.