Same here (although Sunny is essentially tied with Zipp for me too).
If you do not specify a field to search over, the search engine will search for comments with a body that is similar to the query's word stems. For example, comments containing the words
spread wings would all be found by a search for
sewing would not be.
|Literal||Matches the author of this comment. Anonymous authors will never match this term.|
|Full Text||Matches the body of this comment. This is the default field.|
|Date/Time Range||Matches the creation time of this comment.|
|Numeric Range||Matches the numeric surrogate key for this comment.|
|Literal||Matches the numeric surrogate key for the image this comment belongs to.|
|Literal||Matches comments with the specified user_id. Anonymous users will never match this term.|