commander

Asmuch as something could be the "word of god", yes.

Is Rakhi a sikh festival, can Sikhs celebrate it?

For the first question, a certain no. While there is no "ban" on Rakhi, I believe it to be against the teachings of equality in Sikhi. So, I would answer your second question with a no as well.

However, if a non-sikh woman (hindu, I suppose) wanted to tie me a rakhi, I would not object to it.

At this point, no. Sometime in the future, maybe.

Which school/college/university do you go to?

SSA

Is it the fear of God or the love for him that stops us from doing bad deeds.

Wjkk Wjkf

The concept of "fearing" God is not present in Sikhism. The Guru guides us in determining what is "right" and "wrong". For Sikhs then, it is the respect and love of the Guru that stops them from committing acts which are against Sikhi.