Open SaaS development from scratch: Day 1 - requirements and UI wireframes

It a second post in this reality show: Open SaaS development from scratch: why and what

I start every project with gathering requirements. In this case, I'm my own client so I know all the requirements.

Let me list them (shortly):

End users:
0. register and log in with Gmail and email

can open the feedback board to leave feedback
can sort them by time and activity and filter by tag, type, and status
can create new feedback post
can comment on existing posts
can vote for, against, or express indifference to a specific feedback post
can upload his/her userpic
can see the list of his/her posts
can remove a post if there is status yet assigned
can edit existing posts
when creating or editing a post, change text style (bold, italic), and attach images (up to 5).

Board owners:

can create a new board for collecting feedback
can assign a subdomain for this board
will be notified by email when a new post is published
can list all posts by time and activity
can filter posts by tag, type, status
can comment on any post
can close (hide) any post for any reason
can edit any post
can block a specific user (what will prevent new posts for him/her)
can assign a status to a post
can assign the "verified user" badge to any user (in a case when this user is a real user - known by email)
can assign a board name, logo, link to the company's site, background and font colors
can see stats on any post: amount of voted for, against, and indifferents
plus everything what end users can do

To understand the work front better I started from creating wireframes of UI. I use my favorite program called JustInMind that has a free version. Below there are 3 "screenshots" for a public board:

List of posts:
List

Open a post:

Create a new post:

Total time for this: 1,5 hours.

UPD: I will publish the next post not today but tomorrow morning as I see publishing in the evening is not good, people just don't see it.