Dataload can be used to create, modify, or delete Best Bet Groups.
<?xml version="1.0" encoding="UTF-8"?>
<ThunderstoneReplication>
    <Item>
        <Type>saveBestBetGroup</Type>
        <Name>newHotGroup</Name>
        <GroupType>title, description and url</GroupType>
    </Item>
    <Item>
        <Type>deleteBestBetGroup</Type>
        <Name>oldBustedGroup</Name>
    </Item>
</ThunderstoneReplication>
The elements are:
<Type>
    saveBestBetGroup - Creates a new best bet group, or updates an existing groupdeleteBestBetGroup - Deletes the named best best group, if it exists
    <Name>
    The name of the best bet group<GroupType>
    The configured "type" of the group, controlling how its best bets display in search.  Must be one of:
    titletitle and descriptiontitle, description, and url