Micro job sites (like for example fiverr) allow one - for example as a computer science student with programming experience - to offer programming services for low rates. There are numerous examples of (IMO unethical) offers such as "I'll do your programming assignments". Assume for this question that we're talking about reasonable offers for e.g. (simple ... it's just 5$ after all) code review.
Is it possible that offering such micro jobs will have a negative impact when applying for a real job? Like, for example, do they give the impression of one "selling oneself cheap"? Or do the sadly numerous dubious offers that can be found on such sites reflect discredit on oneself?
Note: I'm not asking about whether to reference such services on a resume, but about the impact when such services are publicly linked to an applicant.