Optimizely Inc.

Optimizely is a terrific, innovative service. But their pricing is outrageous. They regularly overbill customers by thousands of dollars (if you go over your usage quota). They recently raised their prices dramatically. They decided they don't want individual websites and instead are going after huge enterprise sales. You can't justify a $1 billion valuation with $199/month sales, I guess. I think they want more than $3000/month just for our 5 million pageviews. I switched to SplitOptimizer. It's not nearly as fancy as Optimizely, but it works perfectly. It's less than 1/10th the cost.