Borders Group, Inc. is finishing up preparations for a bankruptcy filing, according to "people familiar with the matter." The company's financial troubles have been no secret as of late, and those same people familiar with such matters say that the filing could come as early as next Monday, which will be followed by the closure of roughly 200 of its brick and mortar stores, and plenty of job losses. Borders has struggled with its digital presence, including its lack of e-reader (the Kobo partnership came pretty late in the game and isn't really on the same level as B