Gaucamole is completely okay to eat on a diet where you can eat some fats, since, like others have said, it is a good fat. Proportions is key, so not more than a 1/4 of an avocado worth in one day is likely a good guideline. Make sure to use other healthy (especially low sodium) ingredients to keep its health level up.

And it makes a great, tasty ingredient/condiment to add to food that might otherwise feel dull and "diety."

Absolutely! Guacamole is very healthy. It contains the good kind of fat that your body needs. Also it is very high in omega 3's.

I honestly don't think it will hurt if you just a have a little bit each day, guacamole is extremely fattening because avocados are extremely fattening, of course they are also the good kind of fat; the fat your body needs, like peanut butter. You may want to cut out on other fats you have throughout the day just to be safe though.

It is okay to eat guacamole, however it is important that you eat it in small portions. Indeed, proportions are key!