Interesting concept, I like the idea. You have some design issues, your banners are off center in FF (on a 19" widescreen), they justify to the left. The design is kind of plain, but I would switch the 'auto insurance' banner to the bottom since it is unrelated. I guess the main focus is the application, but it seems you can do a little more with the design to make it look a little more credible.
Thanks, forgot to align center with the advertisements! I'm working on a new design now that will be more "twitterish"
Woohoo, an unverified, random Twitter application that requires my username and password. Sorry bud, no can do.
It shows simple a "error" text at the page for the user who enter a wrong id and password. Try to display it as professional. Can you provide the username and password for demo purpose for review?