Hey there,
Happy new year!
As you may know, alt.chi has an invitation-to-review process. It is not unusual from authors to invite people they know to review their article, and it is not against reviewing rules. We think our submission can be of interest to you and we would very much appreciate if you could share your thoughts. Instructions on how to submit a review are on the alt.chi webpage. Should you need further instruction on how to use the reviewing system, we have created this list of instructions available here Your review can be short and informal. Alt.chi reviews are more discussion-oriented than acceptance/rejection-oriented (though they will help chairs decide on acceptance). You don't need to be exhaustive and you can decide to focus on specific aspects of the submission in order to spark discussions.
The final deadline for reviews is the 21st of January, however, the earlier a review is posted the more discussions it will foster.
Thank you very much,
Lonni Besançon, Linköping University
Pierre Dragicevic, Inria, France