Generally it will earn you a bad rep. Back when I was a Uniteam member and our jobs were to work with the new players and server sit, usually we were allowed to kick/ban anyone from the beginner server so long as we had reliable proof that they were an alt that was looking for easy qi or easy tc. However, its not against the rules unless its being done to farm qi or tc.
The thing is, you can't. To beat yellow belts (of whom part is alts) requires certain effort and quite a bit of time, I wouldn't call it farming. If you want a bit easier QIs and TCs... it's not a very good bet doing beginner servers.
