I've seen only 2 others, snowgurl and MIS Lady.
It's interesting to see the boys battle over who get's to help them when they post problems. The battles have been very civil though, which was a bit of a surprise given the ratio of male to female users here (5202:3) and the kind of competition it generates. Perhaps it's not such a surprise due to the fact the conversation is constrained to technical discussions most times. J is the exception and exceptional (outright flattery).
The more the better I say.