For finding the potential customers and quality Leads from LinkedIn I suggest you LinkedIn Lead Extractor. This tool is excellent for building a targeted prospect list. Using this tool you can extract the data includes names, email ids, designation, city, phone numbers, website, companies, etc. you can easily search for the targeted companies in precise locations and industries with the help of keywords. Using these tools you can generate more profitable leads. You can target your leads according to your business needs. This software is very fast and easy you use.