Starcraft – banlist or way to block certain players from being in the games you play in Starcraft 2

Is there a banlist or way to block certain players from being in the games you play?

Update
– To clarify, the banlist I mention is a personal ban list on your account. It's not a public banlist on Blizzard.

Update #2
– Further clarification of what a Banlist is. I'm interested in the blocking/banning aspect and maybe even the safelisting– essentially a system to write and save a comment about players you encounter and play with.

From About WC3 Banlist:

This program is created to make an
effort at keeping your Warcraft III
custom games (for example DotA) free
of notorious leavers. Thereby it
offers a local database (to which you
can add people yourself) to alert you
when a "leaver" joins your game or
someone you've kept some information
about.

The program can do this in various
ways:

• Play a sound as soon as a leaver is detected, or banned
• Display a text in-game floating at the top of your screen
• Copy a text into the clipboard, so you can view the comment by pressing CTRL-V

Further features include:

• Synchronization with other people's banlists via the Banlist.nl Buddy Banlist System
• Integration of clans' banlists / safelists
• Showing the country of or ping to joined players or the host
• A real-time chat interface for Warcraft III using built-in stylesheets to match the Warcraft III-look or another look to your liking
• An anti-download option which
  enables you to have people who try to
  download the map (when hosting)
  auto-kicked
• Automatic slot-reservation
  for your friends and clanmates
• Automatically copying the game name if
  your friend joins a game