question: design pattern to avoid memory leaks

Hi @addyosmani ,

Your design pattern book is awesome. I am working with nodejs and need some advice on scenarios like below:

Lets say i have a function that makes persistent tcp connection to say twitter and does all the parsing on that.
Eg:

```
function addTwitter(somedata) {

var twit = new Twitter(somedata);
twit.on('twit', function(err,data) {
//do something here
// use somedata variable here.
}

}

addTwitter(somehandle);
addTwitter(anotherhandle);
```

so basically this addTwitter is used to make multiple connections to twitter server.

I am wondering if this style will leak memory. Also, If there is a better way of doing this.