>>6 ...what? It may feel important to you to gain "a reputation", for whatever reason you think it means, but it's probably only "important" because you feel like it is. When you graduate, someone might as well have pressed the metaphorical 'delete' key. Be prepared for that day.
>>1 Have you tried exchanging actual words with these people about the subject? Until you know for sure, it's too soon to assume. Ask them if they're actually avoiding you, and if so, ask them why. Don't be intimidated by the idea of getting a bad answer - getting the answer is the first step to figuring out how to fix a bad situation. You won't know how to fix a problem until you know what the problem is. :3