When you are wearing a signature, you're advocating for that product. You're encouraging the use of it, and what if the source is not reliable? This seems as if it's a personal attack, but a part of the problem lies in the fact that as EcuaMobi stated earlier:
Also, I do believe highly-trusted users and staff should be specially careful with what they promote. As I said long ago in a similar case: if the staff promotes a site newbies will think it's endorsed by the forum (I know it's not the case but it can look like it because of the 'Staff' legend). So they definitely need to check any site before promoting it.
Although the only explicit issue you can find about Betcoin is the Betsoft situation, research is still a necessity especially since TwitchySeal has laid out all of it on a thread. Doesn't the jasonort problem at least raise any alarms as to the fact that there might be something else going on? Even though he got his "settlement" (which is definitely a fraction of what he should have gotten) the entire situation started off with Betcoin's ignorance, which has happened on many occasions.