Not wanting to pay for more room... I found this works in the search field:

size:5m or larger:5m

Type in whatever size you want to search for.... then delete at will.
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http://davidbearphotography.com/

"If it turns out that President Barack Obama can make a deal with the most intransigent, hard-line, unreasonable, totalitarian mullahs in the world but not with Republicans? Maybe he’s not the problem."