I have made some wallpapers today, containing a prayer to be said before connecting to the Internet that was composed by Fr. Z from the What Does The Prayer Really Say? blog. The prayer can be found with an explanation, the original in Latin, and other translations here. I would definitely love to make some more using different fonts and colors if you want to request one in the combox, and as there is not an official patron or patroness of the Internet yet (according to the link above) I can also substitute other saints for St. Isidore; I like the suggestion of St. Maximilian Kolbe.
Feel free to take these and use them! I hope they are useful and attractive as well. Be sure to click on the pictures before downloading!