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Thanks Marcus! I have yet to absorb and digest the details of that article. But many thanks for sharing a great post on the topic.

I continue to get link exchange invitations. Apart from the fact that the links I connect to should be relevant, is there an ideal no. of outbound links that I should maintain - or maybe a ratio or something? Should I even consider their page ranks - and do I have that right when mine is not that high (the last question may be stupid but I still want know). Thanks.

I now know that first-touch attribution will enable me to track the actual source of a sale - regardless of various websites visited by a client prior to making a purchase on our website. The system takes note of the very first site that introduced a client to our website - hence we have a more accurate tracking here.

However, how long does Google keep track of that first visit so it can successfully attribute any sale to our site, to that first site visited, regardless of various websites visited in between. Like, for example, I found site A via FaceBook. After this, I kept visiting other sites which also led me to site A. After a week, I finally purchased from site A.

Will first-touch attribution credit FaceBook for the sale? What if it's been more than a week from the first visit to the sale? Up to how big should the gap be in order for the system to keep track of these things properly?