Fresh off of the news about Mervyns' collapse,we're seeing reports out there that Circuit City could close, at worst,hundreds of stores after the holiday season. Most estimates havethe electronics retailer at least shutting 150 units.This isn't toobig of a surprise. Just last month executives said that they werehalting any new store openings for 2010. The chain was alsonearlypurchased by Blockbuster earlier this year in a potentiallyhead-scratching deal.Is the electronics segment truly aone-specialty-chain show with Best Buy at the top of the heap.Circuit City has struggled to keep up with its rival, and now someanalysts are saying that the company's downsizing could actuallyhelp Best Buy."We think there will be a pretty significanttransference of sales from closed Circuit City stores to Best Buy,"said FTN Midwest Securities analyst Anthony Chukumba, in aReuters article. "In addition to that, we think Best Buy'sgross margins would benefit because they would have increasedleverage with suppliers."Best Buy's sales are holding up, and it'sexpansion has not slowed all that much, but how long can that chainkeep it up? Either way, Circuit City's news can't bode well forlandlords.