Yes I found one go to cydia and search for lockinfo

I believe there is a whole new notification system in cidia that's why I really want to jailbreak but stuck with 3GS new boot rom never jailbroaken try YouTube for iPhone notification if there is any on cidia you will find review on YouTube for it

I used to have fun with twitbird but now I am using the official twitter app they know their site better than other app makers