Hi Seeed,
I try to comment in some blog posts in last previous 6 months. After that, the comments never shown up.
I am from Myanmar and I notice that some of my ISP proxy address are in spammer lists such as botscout.com, www.stopforumspam.com, projecthoneypot.org. But please notice that all users at Myanmar are behind those proxies and firewall. These IP address 203.81.175.xxx is belong to my ISP Yatanarpon Teleport.
If you block these IP range, no one from Myanmar cannot register to forum because there is only One public ISP in Myanmar(Yes, if you believe it or not 
).
So, pls white list my id or this IP range.