This morning, ReachLocal filed for an IPO ,  in what has been a long-anticipated move for the firm. ReachLocal started releasing financial information as a private company earlier this year, saying in August it hit $147M in revenues; and has been rumored  among local tech execs to be prepping for an IPO for much of this year. Full disclaimer: both Clearstone and Redpoint have or are current sponsors of socalTECH, though our coverage is always independent of our advertisers There’s a lot of folks gambling on the IPO market this week, with a bunch of IPO news — both from local VCs as well as one local company.

Deloitte, which ranks these every year (disclaimer: Deloitte recently became a sponsor of socalTECH, though that has no influence in our coverage), uses the five year revenue numbers of companies to create their listing. However, it was interesting to note that Number 1 on the list was ReachLocal , the Woodland Hills-based provider of local search advertising services — topping the list with 146,050% growth over 5 years. Perusing the Deloitte Technology Fast 500 list for this year — the ranking of the fastest growing companies in North America , based on the last five years of revenue–it’s quite surprising to note the sheer number of Southern California firms listed.