Twitter?

You can also earn money by joining facebook groups which use twitter to share links . If you are with expertscolumn, triond,hubpages ,redgage and so on, where they pay per view you may increase your earnings by joining these groups which use twitter to share links of members . if you are interested I can help you .

friend u can earn money by twitter . there are many way to earn money... but u have big amount of followers... u can increase your refering users, promote your business , u can make money buy commission base systems and fan slave also....

One good way is using adfly to shorten links, then post those on twitter. Everythime someone views your adfly link you make some cash. You can shorten any link to make money off it if you have enough followers.