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Ugh. That article mischaracterizes the arguments presented in The Bell Curve. Race is only discussed in one chapter of the (very long) book. It also mischaracterizes the criticisms. Herrnstein & Murrary received a lot of criticism, but less from leading scientists who actually examine individual differences.
A couple of things to note:
1) Scores on an IQ score do not equal "Intelligence". Intelligence is a psychological construct. IQ scores are an approximation of that construct.
2) Independent of "Cultural Bias", IQ scores predict many academic, economic, and social outcomes in the United States (and other Western nations). Intelligence is culturally specific. What is intelligent in the United States is unlikely to be what is intelligent in sub-Saharan Africa. IQ scores are unlikely to predict as much in other cultures.
To answer your question: The modern IQ test may be the most reliable psychology test ever invented. It's predictive validity is well established. I don't see any harm in giving someone a test. What you propose to do with the scores is more of an issue. I suppose knowing your own strengths and weaknesses may help you make decisions about career tracks. Though most research I have read indicates that interests trump abilities when considering job satisfaction. (The Strong Occupational Interest Inventory better predicts job satisfaction that any test of ability).
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