Collect profiles and data for 100 brands from social networking sites

I need someone to identify and capture (in our own web-based database) the official websites, Twitter accounts, Facebook pages and YouTube channels for 100 large global brands. In addition, I will need you to identify their LinkedIn company pages, and capture some manual data for each, and enter it into an Excel spreadsheet that will be provided. Around 20 have already been done, so you will need to complete the remaining 80.