Netflix ( NFLX) shares received a boost on Monday on vague rumors of a takeover offer.Theflyonthewall.com reported on Monday that the 5.5% jump to $42.32 is attributed to "renewed takeover speculation." Granted, about two years ago it was widely rumored that Netflix was going to be acquired by Amazon.com ( AMZN), but nothing came of it. Netflix is in the process of gaining market share in the movie rental business, primarily from rival Blockbuster ( BBI). Last week, the company announced that it will stream movies to Sony's ( SNE) Bravia high-definition, Internet-connected TVs starting this fall. It's also planning to expand its streaming services to the Roku player, Microsoft's ( MSFT) Xbox 360 video-game console, and recorders made by TiVo ( TIVO). In April, Netflix posted a 68% surge in first-quarter earnings to $22.4 million, or 37 cents per share, and said it has added 1.6 million subscribers since September, giving it more than 10 million customers.