Why? Isn't iteration a good sign? The accelerators have only been going for the last couple of years so it's too soon to cite 'success' (unless you count fundraising as newsworthy)
Don't get me wrong, I am all in favour of the work they are doing. I was just wondering about what was and what was not working for them.
I guess it's easy to get used to YC companies bursting out of the gates and making an impact from the get go that I thought it strange I did not know any companies from those accelerators.
http://eu.techcrunch.com/2011/01/27/screenreach-raises-50000...
http://eu.techcrunch.com/2011/05/23/loveyourlarder-wants-to-...
http://techcrunch.com/2010/11/23/curated-by/
Not sure about Springboard, the programme is still going on.