False positives

Please ignore the PR if you have grown fond of false positives in etabot :)

I tested to make sure the right response strings get built from irc messages, but nothing else, so caveat emptor.

```
"I like heist. All atheists like heist. And snaplet-extras!"
```

posesses etabot to say:

```
imalsogreg is talking about heist and snaplet-extras in #haskell: I like heist. All atheists like heist. And snaplet-extras!
```