Match.com and eHarmony could learn a thing or two from the homesharing service offered by St. Ambrose Housing Aid Center in Baltimore: Even the most sophisticated computer algorithms can’t replace good old-fashioned matchmaking, in which professionals get to know clients one-on-one to decide who would make a good “fit.”

It’s a simple concept: There are homeowners who need help paying their mortgage or other expenses, or just want the company. And there are other people who need an affordable place to call home. Why not match them up?

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