Gravatar image

gravatar_img.go

// Gravatar image
// http://en.gravatar.com/site/implement/
// Run it: http://go-vim.appspot.com/p/oAsi0WvLlf
package main

import (
	"crypto/md5"
	"fmt"
	"io"
	"strings"
)

const email = "[email protected]"

func main() {
	// create the md5 hash
	hash := md5.New()
	// get the email from URL-parameters or what have you and make lowercase
	io.WriteString(hash, strings.ToLower(email))
	// compile URL which can be used in <img src="RIGHT_HERE"...
	fmt.Printf("%s avatar image link: http://www.gravatar.com/avatar/%x", email, hash.Sum(nil))
}