sir, they are many blogs/web sites. like safelist, traffic exchange sites, face book,twitter, Google+, Linked in etc. We can know all these by going through serach engine. In these if we post our Ads, Texts, linkes etc, as provided in SFI sites, in case these are visited by viewers, these can be assessed.
By this way, we make the other marketing net work businesses into SFI site.
