My experience with your Crewsware product over the last several years has been fantastic.
I started out (like most, I suppose), using your software to help with building the best block of flying that I could hold at my seniority month after month. Let's face it, the Pairing Filter function is a must to allow an individual the ability to plow through the hundreds of possible flights and pairings from month to month and make sense of what's available.
As time went on I started using other functions such as Award Builder to fine-tune my bidding as my relative seniority increased on my equipment. The Pay and Expense Tracker was a God-sent, allowing us to track and then claim for lost pay and expenses that fell through the cracks from month to month.
I personally feel that the best feature that your software offers is that it is continually being improved and expanded upon. It's seems that you're never content with the current version, always looking for customer feedback and ways to fine-tune your product.
A few examples are "My Layover", great ideas here for new things to do while away from home. "Who's in Town" and "Friends Blocks" allow us to connect with buddies and keep in touch. I've even found the "Currency Converter" very helpful recently since the Canadian dollar has been fluctuating as of late against other world currencies.
The best new tool that you offer is the "Position Planner". Here I can take a snap-shot look to see what I could hold on equipment bids, allowing me to make an educated decision as to future moves.
To sum things up, your software is ever-improving and more and more useful every year. It's like opening up my tool-box at home and finding an cool, shiny new tool there and realizing "yes, I can definitely use that !!"
Thanks for not being content with mediocrity and continually striving towards putting the best tools in our hands year after year. I look forward to seeing what you have to offer in the years to come - keep up the great work !!