I dont think reddit's stability is as bad as it looks. Just that Reddit's community is pretty vocal on it. IIRC, they have availability in high 90s (may be jedberg can confirm).
Yes, we are above 99%. We just have a community that is very vocal with things are broken, and then continue to be vocal about it after it is fixed because it is funny.
For example, we heard "search sucks" for weeks after we switched to the new service, until we announced the switch, and then all of a sudden the tune changed. :)
