"It is indeed a sign of increasing visibility.
One sign of increasing popularity is growing media panic about cameraphones, surveillance and personal privacy.
The initiative comes as another sign of increasing diversity in a school system once regarded as largely affluent and white.
Former U.S. diplomats scoffed at the idea that Kim's letters are a sign of increasing personal trust and meaningful progress.
In a sign of increasing worries, senior Tories have recently come to Goldsmith's aid after what has been viewed as a lacklustre campaign.
And in a sign of increasing confidence, several people even raised the most sensitive of subjects in this one-party state, praising America's multiparty democracy.
Businessmen have started to reinvest their profits at home rather than sending them abroad, a sure sign of increasing confidence in Russia's future.
The comments, made to the Financial Times on Monday, are a sign of increasing panic among producers about the effect of lower oil prices on their economies.
A practical move by the city governor, Basuki Tjahaha Purnama, or a sign of increasing restrictions in president Joko Widodo's democracy?
But there is another way of looking at it, says Napier-Bell, who thinks the lack of gay influence on rock music is a sign of increasing tolerance.
Palin is good at seizing on trends, however, and her decision to latch onto the "brokered convention" talk is a sign of increasing interest in the idea.
