I just added a page to the site listing the most common keywords used by the bot. Take a look! If you are signed up, make sure to log in to your account and add any keywords that look interesting.
I’ve written before about how the bot sometimes takes a keyword and buys something unexpected. For example, with the keyword ‘pickle’ it has bought seeds that can be used to grow vegetables which you can eventually pickle. Especially with some of the broader keywords it can have quite roundabout logic.
With keywords the bot uses an OR operator not an AND. If you submit a comma separated list of keywords (for example: red, gadget, craft, star wars) the bot will search for each keyword separately. That is, a selected package will only need to match one of the keywords not all of the keywords (red OR gadget OR craft OR star wars). The more keywords the better.