You're probably new around here, so here is the deal with the letsrun.com message board:
There are a few posters on this board who are indeed elite or who at one time were elite. The vast majority of posters on this board, however, are 16 - 18 minute 5K types who are envious of the elite runners. These runners spend their free time dispensing advice as if they are authorities on running. They also enjoy insulting elite runners whose performances fall short of the expectations set by the public.
Deep down inside, these runners know they suck. It hurts. I mean, imagine that you're a 17:30 5K runner who puts a tremendous amount of energy into insulting Alan Webb because he can't finish in the top 5 at the World Track and Field Championships. These runners must feel like such hypocrites.
Now, you come along. You are someone--who has become something of a temporary public figure because of your ebay posting--who is actually slower than these 16 - 18 minute 5K runners. As you can imagine, these insecure runners are now beside themselves with glee. After years of having to insult runners who are several minutes faster than them, they can now insult a runner who is slower than them. It's like a gift from heaven.
I am not an American Record holder, but I'm faster than 99% of the people who post here. I say: "more power to you." You should be proud of what you've accomplished. If you get some some sponsorship money, then good for you.