LinkedIn Pushing Ads into Inbox

I’d noticed a number of reports about LinkedIn monetizing its audience through advertising, but this morning is the first time I’ve seen an ad in my inbox:

I absolutely understand their need to generate revenue. But I’m curious how users will feel about this approach–particularly if the ads are not even targeted. I am a delighted (though non-paying) LinkedIn user, but my delight would quickly fade if my inbox became over-run by spam.

By Daniel Tunkelang

High-Class Consultant.