I think if you want to reach large crowds quickly with, say, your own website, the cheapest way is to divert traffic from your facebook page. This, of course, requires a couple of good own facebook pages. :) With the right activity, you can get quite good for 50-60 thousand forints, you just have to wait and be eye-catching. The real thing, of course, is that Google delivers visitors, but I think it's a tougher task to get results there. True when you get started, you don’t have to constantly post like facebook to get traffic.