Not really a bug, but a suggestion

The sentence on the home page toward the bottom:

```
We're not reinventing any cryptography here - the goal is a simple way to look up and trust keys, based on known public identities.
```

Does a good job of explaining what keybase is. I didn't really know what the site was for until I read that. Maybe make that a bit more obvious & prominent on the page.

Cool service though, just took me a bit to get why I'd need it and what it does.

Start at the home page and locate the quoted sentence near the bottom. Review how the page currently explains Keybase and determine how to make that explanation more prominent; done means visitors can understand the site's purpose earlier and more easily.

Written by the indexing model from the issue text.