I routinely log into straightrazorplace.com using either Mozilla Firefox or Google Chrome and do not see any warning.

However, the SRP forum uses the HTTP protocol vs the encrypted HTTPS protocol. Thus, it might be possible for someone to intercept your user name and password. Sensitive personal information other than your password is not normally sent over the site. You should not be using the same username and password on this website that you are using on any other web site where you might be exchanging sensitive personal or financial information.