Thank you for your reply. Then, I guess it's a bad idea because it could flag facebook about the activity. So, I can garantee future users that with the modal box, it's working very good ! I started yesterday before going to bed and when I woke up, I got like 160 new likes. And it's still growing. I got what I expected by buying the plugin

Amazing plugin !!!
Cheers
Thanks for the feedback on the plugin and we're glad that you're happy with its performance.
Thank you very much. You can trust him.
Plugin working like charm.
Thank you for comments and feedback.
One question :
I know, Facebook is not an exact science. but what would you suggest about the "like" every x visitor ? I mean from how many could be "sure" we don't get blocked by the confirm button ? Cauz, I tried with "every 2", but I got finally the confirm box after 200 likes ...
There isn't a one size fits all answer to it and there are many different factors in each individual case. The "Best Practice and Usage" guide
http://likejackninja.com/FB_Like_Jacking_Ninja_Best_Practice_Guide.pdf that we created covers the question in more detail and we advise all users of the plugin to read that guide for more advice before using the plugin.
No one knows for sure exactly what will trigger FB to activate the "confirm the like" that pops up on your site if they suspect you're up to something they don't like but sending too many likes and too fast is a sure fire way to cause the pop up box to appear.
The settings that you would need to use to stay off their radar really does depend on
1) How much traffic comes to the site where you have the Like Jacker installed
2) If there are any peak times of the day that it arrives
3) How new is your FB page
4) How many Likes has it already received
5) How often did it get those Likes
These are the most important things to take in to account.
The one major factor to take in to account is "How many likes can you send to your page each day without raising any suspicion from FB"?
When you have that figure then use that as the maximum daily Likes limit in the settings.
From there you can adjust the rest of the settings to make sure that number of Likes are spread out over the day.
Like Jacking isn't about getting 1,000 Likes per day right out of the gate. It's about a stead flow of Likes that you get for free simply from the traffic that your website receives. If you rush it then FB will notice and they'll kick your legs from under you and you'll go down hard.
Play it slow and steady and they'll never know what you're doing
Shez