kac-: thank you for your nice words about therocktrading 
river333: do you know that at therocktrading you would be able to IPO such a fund on our stock exchange, in PPC (and eventually distribute dividends in PPC)?
Chronos: I understand the main problem for traders and especially arbitragers is finding trustworthy exchange and I fully agree with you.
We run an arbitrage fund ourselves and we have openly discussed the main problems (also advicing about MtGox failure months before it happened).
Why you should trust therock? Well, several things may help: we are in business since 2007, albeit as only a "virtual" financial institution
and our history should speaks for itself: check our open forums. We are also now among the oldest bitcoin exchange in business: we
were not the first, but all others before us has now closed (June 2011).
We are a real company, based in Malta: on our website you can check our certificate of registration and we are also
using an EV SSL, that - as you know - can be issued only after several checks. We are audited by KPMG.
We are not faking volumes (otherwise they won't be so low
and are not asking unreasonable low fees: we are business
and want to stay in business.
If there is anything we can do to improve PPC experience at therock, being it about volumes, features, whatever, just ask.
We are far from perfect and we don't pretend to be the best exchange, but we are working hard since years and plan
to offer the best we can for a long time.
Thank you
/paci