There should be no viruses on LB. Are you sure it’s not just saying the forum pages are not secured? As far as I know, while LB is a secure site, the threads can’t be secured because people are allowed to post any links they want. I need more info to investigate. Can you take a screen shot or copy what your antivirus is saying, and what antivirus do you use?
Clicking a link by itself can't possibly do any virus-related activity. At best it may run some JavaScript, which can't, in any way, infect your computer or it may download a file, which, unless you actually run it, is harmless. I, personally, would be very very vary of an antivirus program intercepting links I click and wouldn't use anything like that.
I wonder if it's one of those browser extensions that tries to redirect traffic that being said, LB is definitely a virus. I caught it, and I can't seem to get rid of it. No medicine helps. No matter what I do online, the browser always ends up back here. It's a virus. It's addicting. It's contagious. I'm sick and I love it.
I think I see the issue. You seem to have a browser add on that is redirecting you to mybestdc which is an ad server. If it's not on LB, then it's likely in your browser. An easy way to test to see if you have the same issue in another browser. your search history is questionable tho