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Same thing. No endorsement is intended or implied. LA Observed doesn't solicit political ads, but if a candidate or cause wants to reach this audience they are welcome. If one side's ad is accepted, all other sides' will be too.
Yes. LA Observed only accepts ads that are in good taste and that fit the style of the site in the sole judgment of the editor.
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No. Posts on the blogs are editorial content and are never discussed with advertisers.