When interviewing customers to determine their needs, take the time to also ask them where they get information that keep them up-to-date in their profession.
1) Are there organizations that they regard in high regard that a recommendation from such organizations is considered valued?
2) What magazines do they read frequently?
3) Do they have a blog?
4) Do they read blogs? Which ones?
5) Do they read or contribute online discussion forums?
6) Are there places which your customer absolutely disrespects or would not want to have any association with?
7) Do they read analyst reports – like Gartner, Yankee Group, IDC etc.
You want to find out where they hang out professionally online and offline. This is because if and when you build a product/service that solves their needs, you want to make sure that the new product/service is promoted well where your potential customers hang out. So, there is more to learn in customer interviews than just the unmet needs – take it as an opportunity to profile your customer very well.