From the Rule of St. Benedict: Chapter 20: On Reverence in Prayer
And let us be assured that it is not in saying a great deal that we shall be heard (Matt 6:7), but in purity of heart and in tears of compunction. Our prayer, therefore, ought to be short and pure, unless it happens to be prolonged by an inspiration of divine grace. In community, however, let prayer be very short, and when the Superior gives the signal let all rise together.
The bold parts are my emphasis.
So if we can't pray in 140 characters, maybe our prayer is too long...
Almighty God give us grace following the teaching & example of your servant Benedict to walk with loving & willing hearts in your service