It's wise to think ahead when optimizing a site with keywords, but often the future is difficult to predict. Spotting trends is somewhat easier because they tend to follow a predictable pattern,
especially when using Google Trends, according to Peter DaVanzo.
DaVanzo calls Google Trends a useful tool for predicting interest, rise or fall, in keywords. Another tool, Google
Insights For Search, lets you drill down into the data by date, region, category and source. Also check out Twist and Twitter's search tool for spotting trends.
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