I have a spreadhseet that looks something like this:

```
Referrer --- Clicks --- Conversions
http://google.com/search?q=hello+world ---- 12 ---- 3
http://george.com ---- 4 ---- 1
http://google.com/search?q=yeah ----- 3 ---- 3
http://george.com/2010/3/this-blog ----- 4 ---- 0
http://www.wave-runner.com/hey ---- 3 ---- 0

```

How can I write a macro that will consolidate it like this:

```
http://google.com/ ---- 15 ---- 6
http://george.com ---- 8 ---- 1
http://www.wave-runner.com/hey ---- 3 ---- 0

```