Very interesting indeed!

The problem with this service at the moment: If you're planning on targeting locals (South Africans) it's likely you're wasting your time. Maybe once it's had time to grow a bit and more South Africans join you could see results.

As bjsteyn quite rightly pointed out, Facebook page likes is probably the best way to go. Once a person has Liked your page, they are subsequently subjected to your future Facebook advertising efforts (statuses, links, etc.) in their news feeds!

Even if 0.1% of people liking your page are actually interested in your product, score!

I've actually disallowed following my Twitter account because I doubt you will ever see results from that, seeing as it's the quickest and easiest way to gain credits by just following somebody.

I've found that if I'm liking a Facebook page I at least take a couple seconds to skim read what it's about, whereas when following people on Twitter I'm more inclined to just click-spam away for more credits.

It's at times like these when you wish that A: South Africans weren't so far behind with regards to technology, or B: You lived in the US.

Nevertheless, good find BJ!