You can post directly to a single service by prefixing your message with a service trigger. Use any of the following triggers below to specify a service.

@ai

AIM Status

@be

Bebo

@bl

Blogger

@bk

Brightkite

@cu

Custom URL

@de

Delicious

@di

Diigo

@fb

Facebook

@fp

Facebook Pages

@fl

Flickr

@ff

FriendFeed

@fs

Friendster

@gt

GTalk Status

@hi

hi5

@id

Identi.ca

@im

imeem

@jk

Jaiku

@ko

Koornk

@kw

kwippy

@la

Laconi.ca

@li

@lj

LiveJournal

@ma

Mashable

@mu

Multiply

@my

MySpace

@ph Photobucket

@px

Plaxo Pulse

@pl

Plurk

@pr

Present.ly

@re

Rejaw

@sh

ShoutEm

@st

StreetMavens

@ta

Tagged

@tr

Tumblr

@tt

Twitter

@ty

TypePad

@ut

Utterli

@vo

Vox

@wp

WordPress.com

@xa

Xanga

@yp

Yahoo Profiles

@ym

Yammer

@yo

YouAre

Example: To send a message to Twitter only: @tt Hey guys check it out! I'm posting to Twitter via Ping.fm

Posting To A Single Service