The igraph-help mailing list
Please contact us via the igraph-help mailing list if you have questions, comments, suggestions about igraph. You can also use it if you want to contribute code or report bugs. You can join the mailing list by clicking here and following the instructions. It is possible to post to the mailing list without joining it, but then your messages will be moderated and that takes some time (and some effort on our part).
Alternatively bugs can be reported directly at Launchpad, by clicking here. This allows you to follow up on your bug reports, e.g. get notification if a bug was fixed. Feature requests can be reported here, too. You will have to make an account for yourself on Launchpad to use this, if you don't want to do this, just send your bug report to the igraph-help mailing list.