Now, i have done DDoS a few times but now i don't as there are more ways to do it..
DDoSing is easy considering the damage it does to a host with no so great servers.
DDoS is just a program and a custom network of infected computers which all the attacker does is enter ip and press a button.. it's easy and have jumped attack speeds of 100mbit/s to around 15gbit/s and most servers are connected to the internet with 100mbit to 1gbit/s and it costs a ALOT to get protection which as you aware of Anonymous.. DDoS is actually not able to be prevented completely if the attacker has enough bots.
Best way to prevent a DDoS is to not draw too much attention for example.. modding sites advertising on other modding sites which does not go well.
If this forum is being attacked, it must be a low attack unless you have a huge traffic re-routing system.
This sites host is Softlayer Technologies i think and all i know is there do DDoS protection but you have to pay extra for higher protection? I am still wondering why you have mybb have nginx when other ddos protected sites have webservers like ddosdefend & awk filter.
Sorry if this is irrelevant but i saw DDoS and thought i was start my own little story