Google Analytics and properly crafted campaign URLs will give you useful insights into how well each separate tool or message is working.

FORBES: Filling In The 'Direct Visits' Data Hole

Microsoft has announced it intends to "retire" its instant message chat tool and replace it with Skype's messaging tool.

BBC: Microsoft ditches Windows Live Messenger for Skype

Cambridge Assessment, which runs three English exam boards, said its new tool would send a message that cheating is not tolerated.

BBC: New weapon in war against exam cheats

Whoopee, crowed today's opposition, gleefully seizing on Mr Ciampi's message as a tool against the feeble draft law on conflicts of interest that is supposed to sort out those of Mr Berlusconi.

ECONOMIST: Italy's media

There needs to be preparation and self-education, followed by extensive town halls, outreach meetings, visits to senior citizen centers, and the use of every available communications tool to get the reform message across.

WSJ: Why the Republican Lost in NY-26

The Short Message System (SMS) is becoming very popular as a promotion tool for many companies.

BBC: Eat yourself a win

But, being able to message repeatedly as a result of a Facebook like or Twitter follow is an extremely valuable tool, especially for political campaigns who would have had to spend valuable and limited cash to do so otherwise.

FORBES: What the Obama Campaign's Facebook Ad Buy Timing Says About Their Social Engagement