AFAICT this is the site promotion strategy with the best `cost & benefit` ratio, as it leverages the fact that there are so many respected technology folks who are LWN readers and who should have a fair a amount of potential LWN subscribers as followers on Google+/Tweeter/etc.
I know we already have "Post a Link", but increasing the convenience of posting links at Google+/Tweeter/etc should increase the number of actual posts.
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