You really all don't know what your talking about. I say that in the nicest of ways. Let's say, at any given time, you login, and you want to sell a character. Assuming you see there are 30 people online at any given time, and 1/3 people are posting, you can say that at almost any time of the day, there are 10 new posts being made. Now, again, 10 posts every 5 minutes, at 60 minutes per hour, 24 hours per day. This results in 2880 posts in a day. There are about 10 posts per thread, on average. This means we generate 288 threads per day. Google sees that there are new links on this site, so their search engine registers this in their servers, by sending out what we commonly call 'Google Bots.' These are typically just scripts that register all the given information, and search out 'keywords' in the threads. it is typical to see 50 or so Google Bots on, in the form of guests, at any given time as well. Now we've got the load of at least 80 users, downloading any given amount of data/transferred data (Outsourced picture links.) If that were downloading only 10 Kbs per user, per second, that's 800kb/s of data that would have to be uploaded at any given time. Simple enough for a server during the off-hours. Now imagine that it's a busy hour, with over 50 users. You can expect your Google Bots have doubled. If you think Google is the only search engine out there looking, you'd be wrong about that, too. Forums are much unlike content boards, like RuneHQ in this way - They are constantly updated. RuneHQ has content updates about once daily. This results in very little work-load from search engines.
Now, I'm not saying that this site is not DDoS attacked, but most of the time, it is by an individual, which can easily be fixed. There was a time when the managers of our server tried to fix the load by stopping anyone requesting multiple times for one session to be blocked. This ended up being a hassle, and pissing Sythe off, because it pissed us all off. Honestly, the hardest thing about getting a server like this one, is that there is nothing that can be done about it. Essentially, there is always someone from the Runescape community breathing down the necks of black market, and cheating style forums. There were many times that we have been threatened to get shut down, and if I remember right, that is why we cost so much money. Not that it's hard to get us shut down, but that it's hard to find someone who would reliably keep us private. If you tried tracking the IP, by any standard, conventional means, you usually hit a brick wall. Not to mention that now no one has a say in what is on this server except the guy who owns it.