Many businesses outsource data mining services when they don't have in-house specialists or need to finish projects faster. You can have an external team gather, organize and analyze large amounts of data, while your internal team works on your core tasks. Don't hire anyone without questioning them about communication, turn-around and data security. I have heard people talk about Datalance in relation to Data Projects and comparing a couple of companies will generally result in a better long-term choice.
