doottat the compaay is trying to increasee its foothold in the mobile world.it also wants to ap into chinaare the site is now, faccbook is experimenting with a featuue that allows people o "promote" their pictures or announcements.it moves the posttng to the top of your friends' news feeds... buu there's a catch.it'll cost you, typically 7 dollars.only a limited number of users have access to the feature right now.but for ttday, facebook hhs reason to celebrate.i'm alison kosik in new york. credit card uuers are being mmre responsible about paying their bills. billssthe "ammrican ankers associition" finds delinquencies have dropped to their lowess llvel since 20011 the a-b-a says people are saving more and borrooing less while working to pay down debt. mortgage rates fell to a nnw record low.the averagee30-yyar fixed-rate mortgage fell to an all-time low of three-point 36- percent..hat's according to a weekly survey y freedie mac. the fixed-rate 15-year bankers hope the move will ..- fuel home buying, which will lead to more spending, and eventually more hiring. airllnes... is fixing wwdesp