(Putting my normal user hat on here. I'm purposely preventing myself from trying to think hard on the purpose of your site.) "I" don't follow what your site do

(Putting my normal user hat on here. I'm purposely preventing myself from trying to think hard on the purpose of your site.) "I" don't follow what your site does, even after I see the example. Something to do with retweets, which I thought was just sending someone else's tweet to my friends. But I enter some text and submit, nothing seems to happen. I alt-tab away and come back and a username/password field has appeared, with an empty text box and "60" number. I don't get it. I give up, feeling dumb, and leave the site, to do whatever it was I was doing before.