Usable Search Filtering Techniques:
- user:"username" — limit search to this specific user, one user only.
- type:images — limit search to one or more specific post types, valid: text, images, videos, replies.
- since:1-1-2011 — limit search to posts since Jan 1, 2011 (day-month-year).
- until:31-3-2011 — limit search to posts until March 31, 2011 (day-month-year).
- #hashtag — limit search to posts with any hashtag.
All of these operators may be combined together.
