ClicktoTweet.com allow users to promote their stuff on twitter, but it is also easy to build such a service by your own. Create your own click-to-tweet-links on your websites, presentations or your other personal sites. Here is an example how to build such a link.
4 Dec 2013
There are running a lot of shortener URL service (list services to shortener URL) around, all of them are good and doing there job very well. Their existence authority is to convert a long URL into a short URL, this is particularly very useful when a service is used like twitter to post information and not need the available space with a long link to.