Cookieswap makes it easy to switch IDs in Firefox | Ou Ai Ou Jia

We've all been there: signing up for multiple accounts on a single website, but only being allowed to log in with one account at a time. What if we want multiple accounts to be online simultaneously, especially when Google now uses login methods to access its various services? To view different content under two separate accounts at the same time, I would log into one account through Internet Explorer and the other through Firefox, or switch back and forth using Firefox's IETab plugin. This was quite troublesome, and it still only allowed me to log in with two accounts. If I wanted to log in with a third account, I’d probably have to install Opera. And what if I wanted to log in with a fourth account? Would I have to use Safari? What about a fifth or sixth account? I had no idea how to handle that, and having so many browsers open—and then closing them one by one—was just incredibly inconvenient.