- Has an extremely rigid assessment criteria for assignments to the point that it appears to be borderline excessive and extreme (probably due to a userbase size of tens of thousands compared to opportunities of only tens)
- Invited to test very obscure and unknown online platforms and services with a very low userbase, but ultra-strict criteria implies some experience of these is required
- Clearly no interest in general users with general online habits as many questions in questionnaires ask weird questions about strange habits and use of services that are predominantly unknown
- Has an extremely high rejection rate for assignments and can waste a lot of time completing preassignment questionnaires only to be rejected for an assignment after completing each one
- Even if you successfully complete a questionnaire, you are only short-listed for the assignment and there is no guarantee that you will ever be invited to eventually take part in it
- Extremely low amount of assignments available each month as average user only seems to receive at most 3 or 4 assignment invitations each month. There are months when there are no assignments at all. Email updates are therefore very irregular
- Is not a sustainable source of even an extremely low income as you would be very lucky to get any income from this at all (you're better off doing online surveys!)
- Aimed at students looking for a "quick and easy" way of earning money, although it offers nothing of that description
- Supply greatly outweighs core demand, so business operations do not appear to be sustainable for large geographical areas (Focus is mostly within the EU/EEA but majority of the work is available only within Switzerland, Germany and Austria. In UK (has office in London), there is virtually nothing
- No facility for web profile on website (so that e-mails can be more targeted) or a method of monitoring opportunities online (probably because there are none)
