[interfixus]

Chromium pushed (and kept pushing) me to open an account in order to install addons. I never used the Mozilla sync-feature, but have no problem with it announcing its availability once in a new install. And likewise for the Google-browser, if that's what it does.

[shak77]

I use Chrome (not Chromium) and it has never asked me to create an account to download addons. :/

[propogandist]

using Chrome means you've embraced the botnet

and with the browser phoning home constantly, they know which account to associate your browsing behavior with, no account creation required ;)