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Same idea, except with this product you can share your modification across machines and users without making everybody install your plugins on their client.

It is a lot like a server-side user script but it runs on any platform including all mobile devices and without installing anything. Anyone can use this. On the other hand, try sending your grandma a user script, see what happens.

Exactly - I use Stylish + Userstyles. I cannot see myself using Tomodo.