As per my understanding, domain age factor is one of the Top 10 (if not top 5) factor in serp. This is very much evident and discussed in all SEO webinar now a days. To gain authority in this, I started buying expired domain which was 5-9 year old. But I forgot the fact that these all are expired now and dropped from the whois list. So registering now will be new inclusion and is not going to benefit me. I search in whois directory and found my assumption correct. I took one extra step by going and checking various domain age checker tools available in SEo forums and websites. IN most of them, the result is new registration date while in some it still shows domains if 7 yrs old , 9 yrs old etc. Of course in the waybackmachine or in archive, the history will be since the first registration date. ANYONE HERE WHO KNOWS HOW GOOGLE SEE DOMAIN AGE FACTOR?? BASED ON waybackmachine or whois result. To put it simple, if the registration is dropped and registered again, does google take age of that domain into consideration. Help???