Post things that people will like. Do know your facebook friends or do you have 1000s just for the sake of having a lot? If you know most of them then you should know what they like or don't like. If you have 1000s just for the sake of having FB friends then really it's hit or miss.
Do like and make comments on such posts and pages where there are many comments and likes are given. so if you like and make reply on such posts then all the peoples can see your comment and come on your page and like your page, only if your comment was informative.
If you want genuine likes on facebook then tou try to like some other pages where there are maximum comments and replies are available. try to like or comment on that so the peoples come to know about you. if you want any kind of like then addmefast, like4 like this are the best tools.
Since you are already gaining 5-6 likes per day, what do you think are the posts that allow you to have increase in likes? List down these strategies that you perform according to their effectiveness. It is good to to continue performing the strategies that you think are attracting likes on your page.
Also, if you're willing to spend some money to increase facebook likes, investing on Facebook Ads is better than paying for likes from payment sites that are possibly not genuine and not into engagements. After all, what you are really after in your Facebook campaign is not only the number of likes, but also the relationship you can get with your Facebook fans.
Geting likes on facebook postings is a netural process and it depends upon the popularity, interest and knolwledge level of post. However, by mailing to your friends list, you may ask to like the post. Just shoot out hundreds of mail with post link asking to like the post.
*Add a Like Button or box to your blog
*Add a Like Button to your website header
*Target something people are crazy about
*Write a great title
*Write compelling copy
*Make your facebook cover relevant
*Show the buzz on your page