Ellothoughts: I find it odd that search is so wonky. I do think I found that there are times that it is actually working, there are just no results to present, so the search appears broken. I found it could work if I refreshed the browser. I did get it to give me results from time to time. I was not able to ever find anyone I knew that way though.
Also, I like (ha) that there is no way to just mindlessly click a button on something that someone shares, you can either comment or not. Maybe that can lead to some more tangible social interaction?