Search on Paperbot is very powerful and goes way beyond just basic keyword.
- You can use #channel-names and #hashtags to filter content by the channel they were posted in or hashtags associated with them
- You can search for specific people by typing their @username
- You can use the "-" operator to exclude a specific keyword
For instance, if you search for "@john #marketing -adwords", this will find all posts by John, in the marketing channel or with the marketing keyword, with the exception of posts containing "adwords" on their title/ description.
Give it try and let us know if you have any questions.