Complete list of Google algorithm updates for 2004.
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|#||Date||Update||Update type||Noticeable effect|
|2||Feb, 2004||Brandy||Ranking signals||No estimate given|
|1||Jan 23, 2004||Austin||Ranking signals||No estimate given|
The Brandy Update greatly expanded the size of Google's index, and more importantly, incorporated Latent Semantic Indexing (LSI) to the algorithm. Other signals purported to have been altered with the Brandy update were:
Some felt that the Brandy Update also reversed some of the effects from the Florida Update of 2003, as some of the data centers taken offline during that period were now brought back, along with rankings of many previously demoted sites.
Google's Austin Update continued where the Florida Update of November 2003 left off. As with Florida, Google was targeting link farms and on-page spam tactics such as invisible text and META-tag stuffing.
Many previously high-ranking spared from the Florida Update had now disappeared from search results, with penalties and bans from obvious spammy behaviour.
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