What does gusta esta foto mean?

Answer 1

As written, "this photo pleases". You need another word here to describe who or what the photo is pleasing to. "Me gusta esta foto" means "This photo is pleasing to me", normally translated as "I like this photo." "Le gusta esta photo" would be He she or you like this photo. "Nos gusta esta foto" is "we like this photo".

Remember that in a phrase like this, the subject of "gusta" is the photo, so in the last example, "gusta" remains singular. ""me gustan las fotos" changes to a plural form, or "I like the photos".

Another interestting point is that you correctly used the feminine form for the word "foto", even though it ends in an "o". This is because it is a contraction for the word "fotografía".