Once in a while, the search giant Google updates its index with the data they collected over the past weeks. For some these updates are extremely important, for some not so much - but it can change the face of the web for everyone.
Matt Cutts, a leading technologist at Google, writes in his blog (mattcutts.com) that the next update is rolling and that the times of these big shifts, like we have seen it about every 3 month, is over. The search engine will update its index more frequently in an ongoing process in the future.
"Update" in the past meant, that Google was changing its index (or SERP = search engine result pages) so that everyone saw clearly a difference. Domains were completely shifted - sometimes from nowhere to the top of the results.
For everyone, who does business online, these updates grew important in the last years, because Google shuffles in a remarkable amount of traffic to a lot of sites. Sometimes the major part of all traffic a site gets. So, an update could lead to real problems for a site that lives of traffic from big G, or - to keep it fair - it could lead a site to success.
So, if you have a digital life, watching the update process is of interest for you, too!