A welcome landing page can be useful. I have recently used it for one of my pages, and now I am getting likes daily. Weekends I get more likes Make sure to update your fan page regularly so that ppl stay interested too.
I do agree, an effective landing page for your business page could help you. An effective landing page contains information valuable to readers and related contents for your niche. More so, it is very important to keep your visitors/costumers/friends updated on what's going on your business. An excellent strategy could giving out freebie and mechanics should include liking your official FB page. I use this for my blog which is great for my blog traffic as well
Facebook like exchanges, active facebook fan pages, using ocommunity or FFAP, promotion of your fan page outside facebook
The company TA Vision has created a Facebook Like Generator that helps you to convert your website traffic into Facebook likes. It is a FREE service and totally worth checking out!
I used to use Facebook Friend Adder with proxys and multiple accounts adding a few friends a day and having an ad and pic with an aff link on my profile, nows thats a lot harder to do, try mafia wars method or get a profile pic of a hot girl and join lots of groups and pages.
Are you talking about a facebook fan page or just a regular facebook page? If it's a fan page, then set up a squeeze page on your fan page offering some kind of free offer in exchange for people liking your fan page. The free offer can be as simple as a free ebook, and you can find ebooks for free to give away by just searching Google.
You can use Facebook groups to drive traffic , also there are some sites which can be used to increase your likes check tweers.com or http://alturl.com/aj35p etc to do it ...