Just as a follow up - we've found the bug, and we have a fix. This likely won't fix the few mistaken results you've already seen, but will prevent any new mis-attributed retweets from showing up in the results.
-Doug On Jan 22, 1:16 pm, Sarah Richards <sarah.richard...@googlemail.com> wrote: > OK! Thanks for the reply. > > Sarah > > > > On Fri, Jan 22, 2010 at 5:45 PM, twitterdoug <dc...@twitter.com> wrote: > > Hi Sarah- > > > This is a bug. We'll be fixing it as soon as possible! > > > On Jan 22, 1:48 am, Sarah Richards <sarah.richard...@googlemail.com> > > wrote: > > > Hi, > > > > Today I've noticed that the search query I use: > > > >http://search.twitter.com/search.json?q=from%3Aschoolsforhope+OR+from... > > > > Is now also returning Re-tweets of posts, which we'd prefer not to > > > show. Is this a change to the search? We've not noticed these > > > appearing before. > > > > Thanks.