+1 @Miraz and this has been debated in other threads, more recently this one. However, I hope this won’t go extreme in the other direction and limit replies to only 300 characters coz people might think it’s not worth replying if I have to make a separate blog post, thus reducing interactions.
Offering to turn it into a full blog post is good, but only if it carries some context. I’m not going to have random replies as posts on my blog. Miraz’s beef (I presume) is with the timeline view (incl. with multiple photos) and not with the actual length of the reply so rethinking the timeline UI may be in order and not creating another class of posts.