How to log in Stack Overflow?

To log in to Stack Overflow, you just visit a URL beginning with You have two passwords for this, your "login" password and your "edit" password (I'll explain what this means shortly), but you can change these later if you like. Once you're logged in, there's various options available on the page that allows you to do things like search through posts, edit questions and answers, etc.

So how exactly does this work? What actually happens? There are several steps involved. First, though, you need to visit a URL beginning with. After you're successfully logged in, the URL will change to something like (which is to say, once you create a new post, the post will be under the URL ) -- not an exact match, but it should help you see the way Stack Overflow works under the hood. Note, in particular, that all URLs are actually so even logging in doesn't require redirecting.

Let's take a closer look at the first step of the whole process. For purposes of illustration, I'll call our login and login2 URLs, respectively: In both cases, the request goes through a couple intermediary steps before reaching its final destination at For logins, a cookie called stploggedin saves information about what account was logged in to which URL, so even if the session's ended, we still know were logged in to stackoverflow.com because our cookie knows about that.

When a request for login2 is initiated, however, a script located at /account/login2.php first has to check to make sure the request is coming from a human visitor. To achieve this, it has to query the IP address, hostname, referer (if it exists), and referrer policy (how should they be configured?), as well as user agent (this is what distinguishes browsers and users), and some other fields that I'm not going to dig into here.

How do I open a Stack Overflow account?

What do I need to open a Stack Overflow account? In order to be able to vote, comment, and post, you must have an account. When you try to log in, you'll be prompted to create a new user. Just click Create Account to create your account.

After you create your account, you may be asked to confirm your email address. Once you've confirmed your email address, you'll be able to log in.

You can also use an OpenID if you already have one. Click the login link below to login with your OpenID.

Your Stack Overflow account is free. However, we're not able to offer as much service or reputation as a paid account. If you're interested in registering for a paid account, check out our options page.

What are my permissions? How do I reset my password? How do I delete my account? How do I get help? If you're having trouble logging in or want to ask a question, please submit a support request on the Contact Us page. What are the privileges of a super user? Super users have access to many features. For example, they can view, edit, or delete comments, they can delete posts, and they can access all areas of the site. Super users do not have access to moderation tools, though.

Note: Super users are members of the Stack Exchange community team. They can view your activity on Stack Overflow, but they cannot access your profile data, questions, answers, or edits.

When a post is deleted, a message is displayed at the top of the page. Deleted posts cannot be viewed, and the author of the post cannot be contacted.

When a comment is deleted, a message is displayed at the top of the page. Deleted comments cannot be viewed, and the author of the comment cannot be contacted.

How do I get feedback on an edit? You can find the answer to this question in the Help Center under Reviewing Edits. How do I get to the Review Queue? The Review Queue is a list of comments you haven't had a chance to review yet. It's an easy way to see which of your comments haven't been approved yet.

What is the Stack Overflow app?

The Stack Overflow app is our first and flagship application that was built for the Ubuntu platform.

This is one of our projects that I have been working on for quite some time (since my time on the Android team where I helped create the Gmail for Android application), but I am now fully focused on Ubuntu and the Ubuntu phone ecosystem. And the fact that I've just been on my honeymoon all weekend, that allowed me to be more involved in the overall product direction.

In this first post I'll try and answer the following questions: How is it different from the browser based solution (ie browsing a URL) already available? Will it have all the goodness of Ubuntu One or are we aiming at being an independent application with its own services? What is the advantage of installing the whole OS instead of having the application live inside a VM/container? What sort of benefits does this give us? What is my user experience like inside the application? Can I expect a good level of polish on the software? How will we scale for the next millions of users? We plan to make this application fully open source, which will allow us to keep the application up-to-date and in tune with the latest version of Ubuntu. We also aim to create a solid platform around this which should be reusable in other areas. So what is our first release?

Let's dive right into it! The StackOverflow app. A screenshot of this awesome page.

Screenshots! Our Stack Overflow application is available in two major flavours: Web version and the 'QML-Application' version. Web version is exactly what you get when you browse to stackoverflow.com in your web browser (if you have the 'ubuntuapp' package installed). It works perfectly fine when running in your existing browser.

The QML-Application version is a complete web-based application hosted in a secure container, and comes with an application bundle which means that we can update all of the contents of the container on every single update which dramatically improves our chances of creating updates very quickly. It is also a standalone application that can run in its own space and doesn't conflict with your existing Firefox or Chrome session, since it doesn't try to use the existing browser session at all.

Where is Stack Overflow?

In which Stack Exchange site is there the best place to ask questions about using the C# compiler in Visual Studio?

In which Stack Exchange site is there the best place to ask questions about C#? I think all of them are valid questions. However I'm looking for a way to select questions which are closed because they're off-topic, rather than too broad or too opinion-based.

Those questions are clearly off-topic. You can't judge that the questions are bad or not. It's just closed. There is no question about that.

To add some more information (to answer to my own question): The StackOverflow.com community will judge the quality of the question and post it as closed/on-hold. The same happens with the other StackExchange communities. A question is only "on hold" for a while when it needs some more details about your question. Only a moderator can close or delete questions.

Answering to your question: Yes, the moderator for c# can delete closed questions.