Plugin for YOURLS 1.5+: Antispam

# What for

This is a __merciless__ __antispam__ plugin that uses the three major blacklists (<a href="http://spamhaus.org">Spamhaus</a>, <a href="http://uribl.com/">URIBL</a> and <a href="http://surbl.org/">SURBL</a>).

URL are checked against the blacklist when short urls are created. They are also randomly checked when someone follows a short
URL and if the link has been compromised recently, the short URL is deleted.

# How to

* In `/user/plugins`, create a new folder named `antispam`
* Drop these files in that directory
* Go to the Plugins administration page and activate the plugin 
* Have fun

# Disclaimer

Checking against blacklists may or may not work for you, this may depend on the type of spam you are getting and on other factors such as your server IP, your server ISP, the DNS you are using. It may even result in all domains being blacklisted from your server. Try and see.