Something new to report to my readers! I found a good new DNS blocklist today, called Brracuda Reputation Block List. Here is the relevant info:
DNSBL domain: b.barracudacentral.org
Uses A type records
Reverse IP address for lookups
Supports DNS TXT records
Result IP is 127.0.0.2.
Number of hits is much higher than my other two popular choices, Spamcop and Spamhaus. Will let you guys know if I have any issues with it.