Well I don't know how other people are doing but I tried during 2013 to use it a few times and this leaded to OOPS every time I tried a search and so on.
Basically a lot of timeouts and errors.
I tried it again this morning and had an OOPS 2 or 3 times but then it may be better.
To see my point just try to do a search, it is nearly guaranteed to get you an OOPS.
See also this bug reports (I am not the only one complaining) for example:
https://bugs.launchpad.net/launchpad/+bug/736005
Please note, that I am not saying it is impossible to work, just that the platform is just currently working at suboptimal capacity and has the same maintenance problems bazaar had. I was quite happy with it as long as it was reliably working.