100%, and are freaking fast...and pretty efficient, especially for high throughput applications tracking tons of changing data. We've found bitmaps handle updates, inserts, and schema changes really elegantly - and quickly (like sub-second). Depending on the use case, looking at cohorts MoM or YoY that freshness doesn't entirely matter, but computing cohorts in real-time hour-over-hour, or even minute-over-minute, for in-app actions/personalization is insanely valuable to keep users engaged (or what ever entity type you are analyzing and taking action on, whether it's devices, nodes across a network, etc).