[itsjustjoe]

Absolutely not, adwords already does this with gclid, and Bing with... mkclid I believe, fbclid will be nice to have and be a convenience for those who data warehouse their own ad data.

If this wasn't Facebook this wouldn't be news, gclid has been around for years.

[kposehn]

Totally. It’s really just feature parity - about time.