What's the max # of contacts Facebook can add from a file? At what # does it think you're a spammer?

[marina_1234]

I want to upload my contacts from your computer into facebook to add all my friends at once (facebook does let you do this). It's a lot. How many contact can be in one file that it will add? And how many contacts is the point where it thinks you're a spammer? Ideas? This has changed many times as Facebook is constantly evolving -- so unless you know for sure from the past few months it's probably outdated... Thanks.

[abraXus]

there isnt a limit

facebook only thinks you are a spammer if one or more people click on "i dont know this person" when you send them a request