Infinite SEO - auto submit question

While I realize that Yahoo and Bing have merged their search engine submission over to Bing, Ask is still a relevant (though small) search engine. Is there a reason why support for Ask isn't included in the auto-submission of sites? Simple Sitemaps included Ask and I had been told by WPMU DEV staff that Infinite SEO also included this as well. (I was encouraged to switch from simple sitemaps to Infinite SEO.) However, when I review the settings - it only shows the options to turn on auto-submission to Bing and Google... Your help is appreciated.