I believe liquidity is a good thing, but can there be too much liquidity? These computer algorithms seem to be really good at making things very liquid, is the

I believe liquidity is a good thing, but can there be too much liquidity? These computer algorithms seem to be really good at making things very liquid, is there any inherent danger in that? I seem to remember reading an article that the automated nature of the high-volume trading machines posed a danger in and of itself.