Update:
After a few days of using, I think if v0 can build up a serie of pages based on one common theme generated by AI, that would be awesome. For now, I have to adjust every page generated into a similar looking preference, not auto enough.
---
This can be useful for a side project's starting up. But, you can not get everything you want. e.g., prompt with "An AI styled login page". You'll just get yourself a trival one rather that a login page with amusing artifacts.
Pros: Easily provide neat designs without looking for a designer. (This overkills the Cons, 10 out of 10!)
Cons: Sometimes it just won't provide what you want. Also, it has UI dependencies, which may be bad if you have a specific UI preference. Plus, free users' production is public unless you pay.