How much you will pay to use twitter and how much you should changed for the advertisement in background of your twitter accounts? Both sounds are different. Through Twittads you can make money and get good advertisement company for your twitter accounts.
For the worthy measurement of your profile and you can use their another one web service WhatsYourTweetWorth. Based on your followers amount, following and total updates amount that will measure — show you monthly amounts in dollar currency. @opengiga acquired $43.96 per month. Is that good? But, who will be interest and is twitter allowing user’s that way?