I have some comments on some issues on this website which if resolved would make it a better website, IMO.
I’ve actually tweeted about the HTTPS issue before, but I thought I could mention it here too.
Since this is a website where users log on with their usernames and password the page should make sure this information is sent encrypted. What I find strange is that the page actually have an valid certificate, but still doesn’t redirect users to HTTPS ( https://powershell.org/ ). It looks like there is just some minor theme issues that prevents that link from working beautifully. Since this is a WordPress site the issue might even be resolved by just altering the site URL in the settings.
The other thing is account creation. Why would anyone running a site prevent users from creating their own account for just the web site? I.e. demanding that you link your account with another social network. What about the users that don’t have any other account or maybe don’t want to link their account? Should they not be able to use this site? The whole linking should be optional and there for the people who want it.
I think both of these is a must if you want to run a good site