I'm not sure where you're getting this idea that Twitter ads are not very valuable. Empirically, advertising is the one area of Twitter that's growing (total re

I'm not sure where you're getting this idea that Twitter ads are not very valuable. Empirically, advertising is the one area of Twitter that's growing (total revenue, revenue per user, etc.). Its their user growth that has stalled. More abstractly, Twitter is very information-seeking / interest-oriented, which seems very ideal for advertising.