Twitter , AllThingsD reports , has been steadily increasing the price it charges for a company to sponsor a "promoted trend" in users' Twitter webpages and inside mobile apps on top of the real chatter-driven trends  sourced in tweet streams . The service cost went up earlier in 2013, and it now costs $200,000 per day (and per territory, though where territories start and stop appears to be unclear)--up from $150,000 in 2012 and $80,000 at launch in 2010. Those are like NYC subway fare spikes !
Trends provide a very simple but reliable  type of brand exposure. The price hike is a sign that the service is proving popular with advertisers, and that the system really does work by increasing customer engagement.
Is Twitter's revenue-generating future based on these sort of low-level, non-intrusive adverts? Or will the company have to be more aggressive?
[Image: Flickr user vastateparksstaff ]