As Linden Labs struggled with a virtual revolt after their OpenSpace announcements, some of Second Life's residents decided to check out the alternatives, most notably the OpenSim based OpenLife Grid. As reported by Hamlet, their experiences weren't all that good.
As I mentioned on Hamlet's blog: it's worth remembering that OpenSim is still very young. Officially, it's in Alpha stage. "Alpha" is is software development speak for "it's a partial, incomplete build, unpolished and probably unstable, but may incidentally work." A quote from the OpenSim site:
"Please note: As OpenSim is still at an alpha code maturity stage, there is absolutely no guarantee that functionality works or is stable, even in the numbered releases. Certain features may not work either because the code is in rapid evolution, or because functionality expected by the Linden Labs Second Life viewer has simply not been implemented yet. However, constructive feedback is still welcomed."
When dealing with customers, expectation management is an important thing, which should be handled correctly. OpenSim users should not expect to find a copy of Second Life when entering OpenSim based grids, simply because the base product isn't finished yet! OpenSim will evolve, and the OpenSim based grids will too. But it will take time, patience and lots of effort from people who code OpenSim in their spare time.
I love toying around with my OpenSim simulators, building stuff with the kids, the fun of creating your own sim, to be your own Linden! But I know and accept it's still under development, and so should other users.