The feature put forward suggestions when registered users could be tagged in photographs.

BBC: Student group to take Facebook to task in Irish court

Last year eBay released query suggestions, a feature that displays related searches and popular items below the search box as you type in your query.

FORBES: Magazine Article

Islanders are also being asked for suggestions for locations to feature.

BBC: Monopoly chooses royal couple's island for new edition

In studying which advertising system to introduce, Mr. Silbermann declined to go into detail, but one feature the company plans to unveil this year is called "suggestions, " which is a way for people who use Pinterest regularly to serendipitously discover other content, said Pinterest executives.

WSJ: As Pinterest Grows, Startup Seeks $2.5 Billion Valuation

The two companies have been talking since late last year and there have been suggestions the hi-tech sensors could appear as an eyecatching feature of the iPhone 5 when it is unwrapped on Wednesday.

FORBES: Links 11 Sept: Apple's iPhone 5 Could Add Half A Percent to US GDP

This feature allows users to easily buy and send gifts to each other based on suggestions while Facebook keeps a share of the purchases made.

FORBES: Facebook's Gifts And Collections Could Spur E-Commerce Growth