Bianca:
1. "Yani" = Means
ppl use it frequently to give an extra explanation.
e.g. "Sho Yani" = What do u mean?

2. "Yani" = as an example
to give an example of what we are telling.

3. "Yani" = approximately

4. finally, some ppl use it when they don't know how express what they want to say in english so they say "Yani" like in english we say "mmm" between the words.
e.g. (Yani I hope that the above -Yani the explanation- explains the meaning of "yani")