Put in a link to a more follow-my-learning Bloom analysis.

README.md

@@ -66,10 +66,12 @@ regard to speed.
 
 So, e.g., on my primary 32 GiB RAM dev box with `bu/zipf`, I cannot make exact
 `lfreq` slower than Approximately Most Often sketches(`bu/oft`). `tests/bl.nim`
-shows another example in a Bloom filter / membership approximation context where
-spending 2-4X what a Bloom takes space-wise can buy a 7-10X latency shrink.
-(histograms & UCE are both pretty good deals, though, if errors are acceptable,
-and `adix/bltab` with fingerprint keys is arguably just "a better sketch").
+shows another example (also written up
+[here](https://blog.cloudflare.com/when-bloom-filters-dont-bloom/) in a Bloom
+filter / membership approximation context where spending 2-4X what a Bloom takes
+space-wise can buy a 7-10X latency shrink. (Histograms & UCE are both pretty
+good deals, though, if errors are acceptable, and `adix/bltab` with fingerprint
+keys is arguably just "a better 'sketch' ").
 
 A little more on LPTabz & friends
 =================================