Someone posted a mac address and got a lot of spam
```
<christopher> foo bar:D2
<phabot> D2: Code Review is a pretty okay idea - http://phabricator.local/D2
<christopher> asdfda sadfdaD3
<christopher> foo bar-D3
<phabot> D3: Cool Changes - http://phabricator.local/D3
```
On the other hand I see things like `(D3)` fairly often. Noting a minor issue, not super important.