LivePerson Pro 7
Ease of Use: 
Although LivePerson offers the most popular features, the program was not quite as intuitive as our top picks. Locating these features was challenging, but once found the program performed to par.
Setup Ease: 
Setting LivePerson up was simple. The instructions were self-explanatory.
Multi-Tasking Ease:
Though possible, multi-tasking was awkward in LivePerson. We were unable to access many feature from the individual visitor chat windows. Instead, we had to open a main task panel, search the current website visitor list, find the right person, and locate the right feature-all before we could connect the customer to the feature. This method is difficult to manage quickly, especially with several chats going at once.
Monitoring Capabilities:
LivePerson offers every monitoring and tracking feature we review except for a website statistics summary. These tools weren’t as easy to use as similar features in higher-ranked reviews.
Feature Set:
This service offers all the basics (with relatively few holes). For details, see our homepage list of features.
Our biggest gripe we had against LivePerson’s capabilities is the limit they place on operators; at most, you may only have five chat operators at once. That means if your company outgrows the limit, you must change chat services. Also, each additional operator costs an additional $99 per month; we felt this was pricy.
Help/Support:
We found LivePerson help adequate.
Scalability: 
Our biggest gripe against LivePerson-the service limits you to five chat operators. That means if your company outgrows the limit, you must change chat services. Also, each additional operator costs an extra $99 per month; we felt this was too pricy
Summary:
Though LivePerson chat service covers the basics and works well, we feel there are better choices for your money.
Reference:
this article and review was found at: http://live-chat-support-software-review.toptenreviews.com/liveperson-pro-review.html