see the word search at the top of this page
There used to be, but it went when the site was 'improved', (i.e. editing stories, pictures for all the groups, square picture profiles that showed the whole image...).
Search bar, top of the page.
ya its that search bar next to the home icon
you can message ppl by user name...
if you know their username.. :D
Yeah right up there in the search bar but try not to put in the whole name.....