BlackBerry isn't done with improving the BlackBerry 10 editions of LinkedIn and Twitter -- not by a long shot. The company has once more upgraded the two social apps, this time with an emphasis on search. LinkedIn now lets users import contacts to find people they already know; in Twitter, meanwhile, universal search now shows photos, profiles and tweets on a single page. There's more than just these two upgrades, of course. LinkedIn reveals more about companies and carries a slew of minor UI tweaks, while Twitter keeps content fresher with automatic caching. If the new versions are tempting, they're waiting at the source links for Q10 and Z10 owners alike.