Possible Duplicate:
Sorry, posts can’t contain that content?
At Stack Overflow, I found what I consider to be either a bug or a GUI design flaw in Stack Overflow:
Oops! Your edit couldn't be submitted because:
* Sorry, posts can't contain that content.
* Sorry, post titles can't contain that content.
The above error message failed to point out the "error", so IMO it is either a bug or a design smell.
I tried to report it at Meta, but I got
Oops! Your edit couldn't be submitted because:
* Sorry, posts can't contain that content.
This happened because Meta does not like the example that I cut and pasted.
In both cases, what is the point of telling me that I have an error without being specific.