High-frequency trading firms pay millions to place their servers physically closer to stock exchanges. The speed of light through fiber optic cable is literally too slow for their algorithms, so a few feet of cable can mean millions in profit. โก
Ever wondered why Spotify share links are so ridiculously louse
What Spotify attaches:
?si=8a9b3c2d1e&utm_source=copy-link
The ?si= parameter is your unique user ID. Spotify knows not just what song was shared, but who sent it and who opened it. ๐ต
You don't need to tell people "skip to 2:15" when sharing a YouTube video.
Just add ?t=2m15s (or ?t=135s) to the end of any YouTube URL:
โข https://t.co/3QszgdQPJk
The URL parameter forces the video to auto-play from that exact second.
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