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I have been scraping facebook groups in my niche lately and have developed a huge list of ids. the list consists of full name, profile link, user id. I went to play around with creating custom audiences so I can market to them and it keeps shooting me down on import. the rules say one column, no heading. Yet they have separate columns for first and last name... and it says mobile app id? So my ids arent good enough?

Im looking for ways to take this list and market directly to the people on it to get them to my page/site/software purchase. Im looking for the road with the least amount of potential issues.

Any suggestions are much appreciated.

I joined a bunch of groups focused on my niche (web automation, so gaming groups, game "hacking" groups, cheating groups, looking for clan/guild groups etc), friended the users with the highest friend count in each (10-40 each, depending on group size), and it increased my network BIG TIME. I can post d*** near anything niche-related (usually post in groups, not just status updates etc) and get a decent response. Cleared 471 likes on post i dd about Web Automation software

Not a BSO or "system" necessarily, just a way to leverage what facebook gives you to work with.