IDPF has released ebook sales stats for Q1 2008, showing 20% increase from Q4 2007 and 25% increase from Q1 2007.

http://www.idpf.org/doc_library/industrystats.htm

(Have not seen this announced elsewhere at this forum.)

Impressive growth. Especially considering that the previous last quarters (Q2-07, Q3-07, Q4-07) were virtually flat.

Hi Prospect, based on my calculation, growth was actually 34.7% year over year and 23% sequentially over the 2008. Great numbers no matter how you look at them.

http://blog.smashwords.com/2008/05/idpf-reports-wholesale-ebook-sales-up.html