Full Disk Space Error Message for Macbook Air

Joe, Please click on the following link (http://avgclick.me/AVGtechnical) and fill out your details, select as Mac OS then the name of AVG Program that you installed in your device and in description please completely explain about your issue and finally click on Email option. The AVG team will reply back to you via email with a resolution.
AVG Guru

I keep getting a warning message that my Startup Disk is full, but the amount of space continues to change/fill (sometimes with the "other/yellow" category fillled up and sometimes with the "applications/green" category, but it seems I always have just above 1 GB of space left regardless) even after I delete files, and I am not sure why this is or how to fix it. I have run an AVG scan and two "threats" have been removed, but the warning message keeps popping up on my screen when I tunr the computer on and while I am using the computer. What to do? Is this due to a virus or malware? Please help.

Joe, Please click on the following link (http://avgclick.me/AVGtechnical) and fill out your details, select as Mac OS then the name of AVG Program that you installed in your device and in description please completely explain about your issue and finally click on Email option. The AVG team will reply back to you via email with a resolution.
AVG Guru