Exactly true - which is why I posted in the first place (I won't go into the math, since others have already).

The important comment is from Doc - whenever you come across poll results you be aware of the sample size, and also how (and if) the respondents have been randomly selected from some population. If they haven't, then using those results to make any conclusions about anyone but the specific respondents would be invalid, statistically.

Also, there is often ambiguity in a question, and this always makes results suspect:

How many "mileage earning" credit cards do I own? Depends on if I count my hotel credit cards or only my airline card. To any who think the answer is obvious, then they haven't had much experience in seeing how people respond to survey questions. A lot would depend on the context of the other survey questions, or if the instructions expressly tell you to include or exclude hotel cards.

Main point - be careful when reading published survey results.