Why Google Chrome Needs Add-Ons: Firefox Users Download 1 Billion (GOOG) — Google's (GOOG) Chrome Web browser has settled down to around 0.7% market share, according to the latest stats from Net Applications. Sad. What could boost that? One thing peopl have asked for since Google introduced Chrome this summer: An add-ons platform so developers could write nifty plugins, toolbars, extensions, etc. Proof that's important: Mozilla said yesterday that Firefox users have now downloaded 1 billion Firefox add-ons. We don't know how many add ons-per-Firefox download that equals, but we bet it's at least a couple. Moreover, we bet it follows the 80/20 rule -- 20% of Firefox users have probably downloaded... [Tags: 1 billion, developers, dud, firefox add ons, goog]