I know that rd.yahoo.com (for example) is a URL redirector that spammers use to get around SURBL.
I also know that if I see a URL like rd.yahoo.com/?http://foo.bar.com, I should actually lookup bar.com.multi.surbl.org.
Not all redirectors are this simple: some allow MIME-encoding or %-encoding of the target URL, others use different characters to separate the target URL from the redirector, etc.
Is there a fairly complete list of URL redirectors I could use, along with code (ideally Perl code) that converts/de-obfuscates "redirector URL" to "target URL"?