Is it worth building a spec home in a downward market?

[Brent Davidson]

Some friends have conviced me to look at getting into building homes and selling them once complete. Would doing so be a bad idea, considering the timing of the housing market?

Even the NY Times has an article today showing the market has begun to turn around. Does this mean builders will not be able to sell, or am I overreacting? There's always going to be a need for homes, right?