Property search engine Zoomf have announced a new feature they're calling "Boost". Aimed at estate agents, it borrows its MO from Google Adwords. Agents pay a set monthly amount to see a priority ad appear alongside relevant geographical search results, but are only charged when they receive leads. Unused credit carries over to the following month. It's a slick idea... although Zoomf could do with a page explaining/introducing it. And if you're browsing with Safari, you appear to be out of luck this morning. (I've just emailed the Zoomf team... I'll post their response.)

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