I promote important status/updates to target audiences for let's say a week it will display on the page. Likes go up gradually which is fine. It's your update status that matters the most.That is why you have to make your page has a lot of interesting stuff to read.
People in your network will think that they made the right decision of joining your network only if they come across interesting and informative updates. Therefore, the most important aspect is to hold people's interest.
Who told you about this site? Did they recieve all tey've expected? I don't know this service but before using any unknown site, I ask my friends is it legit or not.
I read many of answers which are very true but works slowly. If you are inviting all your friends to like your page, you need to click on "Invite" hundreds of time. I have downloaded one script: http://pastebin.com/ZJZpmpFg You need to run this script in your browser's console section. It works perfectly for my page. Hope it'll work for you as well. Usage: 1. Open your Facebook page. 2. Open Console section. [Chrome user press F12] [Firefox users Ctrl+Shift+K] 3. Paste this JavaScript code and press enter. (http://pastebin.com/ZJZpmpFg) Wait for magic. In a few seconds all of your friends are invited to like your page. I've used this method many times and it's perfect. If any issue is there, let me know. Surely try to help you through it.
Surely, AddMeFast is slow and worthless approach. I used it and must say it is good but all accounts are fake so none will notice your posts or none will count your likes. In spite of that, you can use the script that I said. It will use all your friends and their friends if you understand it properly. Quite easy and fruitful.