Decode adf.ly links. Credits https://gist.github.com/alexdrk/6113685

unadf.ly.py

#!/usr/bin/env python
import sys
from base64 import b64decode as atob
from urllib2 import urlopen
from re import search

if len(sys.argv) <= 1:
	print """\
[unadf.ly.py - Decode adf.ly links]
Based on github.com/alexdrk approach

Usage: unadf.ly.py <link>
"""
	sys.exit()


link = sys.argv[1]
page = urlopen(link).read()
key = search('ysmm\s=\s\'(.*)\'', page).group(True)

parts = ['', '']
for i,v in enumerate(key):
	if i%2 == 0:
		parts[0] += key[i]
	else:
		parts[1] = key[i] + parts[1]

print atob(''.join(parts))[2:]