I am fairly new to Meta.
I don't know why i am not able to make a comment even though my comment length is more than 15 character.
The very sophisticated artificial intelligence behind the minimum character limit correctly determined that your comment does not contain 15 characters worth of actual content.
The @Floris
is not necessary as the owner of the post is always notified and will be stripped out anyway. A +1
and a smiley also barely qualify as content ;-)
@molot
is kept in that comment, Luv. In the example you give in your post, the @reply would be stripped out. After that stripping out, the comment would not be longer than 15 characters. You can find the details in this post: meta.stackexchange.com/questions/43019/…