Di Gi Charat is a fairly recent anime released by the animation group Broccoli and Sega's Gamers video-game chain. It is only available in Japan and the Asian market, but its style of animation has attracted many American fans.
Yes, it is okay to submit websites relating to Panyo Panyo Di Gi Charat or other similar series here. There is currently no category for these new series.
Sites in other languages should be put in their appropriate categories. If you can''t find a Di Gi Charat category in your language (that''s, um, likely to be the case), put it in the Anime category.