We don't see it in our Gmail settings (yet), but Webmonkey reports that Gmail Labs has added a very useful opt-in feature for sending text / SMS messages to mobile phones using the built-in Chat functionality.
For instance, if people are gathered at an event, it'd be useful to opt in and get Twitters from other people at the event.
"I'm conflicted, because I feel that putting money into a company that does good might be more useful than opting out.
It also enables you to turn on a 'Live Waveform' which visualizes speech as a graph, and an effectively useful one that lets you opt to to open hyperlinks in the app itself.
"Do you not see that they wander lost in every valley, and say what they do not do?" But the poets could not be written off so easily, and Muhammad often found it useful to co-opt them.
Given the paucity of studies published in the literature, to obtain useful evidence we opted to compare results from different studies, irrespective of the heterogeneity arising from differences in the designs of the primary studies (ie, definition of primary end point, drugs considered).
Instead of thinking as stocking stuffers as quantity over quality, opt for useful gifts your family and friends will be sure to use time and time again.
Once you have captured the email addresses of your users, be sure to live up to what you promise your subscriber base, and do not send them information that they do not find useful, or they will opt out.
This might be especially useful if your ISPs opt out servers seem to be unreliable.
Thus rather than having an opt-in organ donor card and a big education campaign, it is far more useful to have an opt-out system and rely on people's inertia.
At the center of it all is a system dating back centuries that enables monarchs to reward the loyal for their services and co-opt the useful for their influence -- even, some whisper in the corridors of power, return political favors with medals and titles.
