PDFfiller works well and is intuitively easy to follow. I used it for my company's W-2 and 1099's. The forms could be easily found, filled and printed without any problems.

PDF Filler is easy to work with and allows me to fill out PDF'S not configured for easy filling without having to worry about typo's or errors forcing me to start over again.

I am using this service as an ex-pat in Ecuador to communicate with government services in the U.S. Not certain yet if offices like Social Security will accept forms mailed from an online-filler service, so am withholding the 5th star until I know they'll actually accept my forms.

I love it but have trouble navigating some aspects.The printed version doesn't look as nice as the screen version. I love being able to complete paperwork online, filling it in and getting it sent back.

Some functions are not readily apparent but overall it is a great tool. I had difficulty when it auto-filled a date field that I wanted to leave blank. I struggled to clear it because the dropdown appeared every time I tried, and if I deleted the current date got restored by the dropdown. Then after I finally blanked the field it jumped to another and did the same thing. Once I got that cleared it would not let me go to the next page, insisting I populate another field intentionally left blank. I used the slider to jump forward and then approach the page I wanted from the other direction.