Eh, I agree with you there, the tickle test might be bogus, but that's my opinion for ALL IQ tests. Mind you, I am not saying that because I score low on them, on the contrary I scored quite high the last time I took it from a legit source. (more like forced to take it) My opinions are based on things I have experienced. Some people I know with high IQs don't tend to get the simplest concepts, and I know some people who are not academic, but they are the smartest people I know. I doubt a simple test could come close to determining the true potential of someone, otherwise we would be using them everywhere.
Sure, the only online one i'd trust is the BBC's 'Test the nation quiz', which was designed to take a census of IQ in the UK, it's timed and has a fair amount of q's... Still not as many as the Mensa test, but it should be accurate, i don't think it's online anymore or i'd link y'all to it.