There are a lot of Twitter applications which provide variety of services. We already discussed about some of them here : https://pcsplace.com/tag/twitter/ . Twi.tt is a very useful web application which lets you share Pictures, Videos, Audio, Documents, and Polls on twitter. Using this you can tweet about anything and everything from a single site which makes it easy for you as you need not select a different application for each service.
No registration is required for using twi.tt. You can log in using your twitter account. After logging in you can select the service you want to use and tweet whatever you like. The files can be shared by various methods like uploading, emailing, capturing or you can even get it working from the URL link.
Check out http://twi.tt/ to simplify the way you tweet. Follow me on twitter @pcsbox