Wow, that's a lot of Twittering! You have reached your limit of updates for the hour. Try again later.

Above message is what I see now. There are many limits. I am not sure which one I reached. What I guessed is the first one.

• 1,000 total updates per day, on any and all devices
• 250 total direct messages per day, on any and devices
• 100 API requests per hour
• Maximum number of follow attempts in a day

By the way, I cannot tweet right now. :(