If your interested in more answers to the "What are people switching from to use your product?", would recommend you checkout a few episodes of Jobs to be done radio http://www.therewiredgroup.com/tag/jobs-to-be-done-radio-2/
Update: Weird. Why do these links redirect when clicked on from Hacker News to this?
http://breakthrufundraising.com/ezzi.html
That's not where that bit.ly link points to at all.
Update 2: In the source code on therewiredgroup.com website is this guy:
<iframe name=Twitter scrolling=auto frameborder=no align=center height=2 width=2 src=http://breakthrufundraising.com/ezzi.html></iframe&#...;