Many Twitter users post questions with hashtags like #twoogle or #lazyweb. Is this an effective way to find expert answers beyond one's network, or are questions mostly answered by friends?
Rzeszotarski, J. M., Spiro, E. S., Matias, J. N., Monroy-Hernández, A., & Morris, M. R. (2014, April). Is anyone out there?: unpacking Q&A hashtags on twitter. In Proceedings of the 32nd annual ACM conference on Human factors in computing systems (pp. 2755-2758). ACM.