Epic extension! Not only helps a lot with creating projects or using the forums, but the community around the extension is also extremely nice.
EDIT: I regret being hesitant for around 3 months about using it or not as well.

Great stuff.

This extension must be used by every Scratch developer. It makes the Scratch experience much better!

very good, but some times crashing scratch(1 from 40 project start(or something like this)

I can check my messages without going to the website!