Usability 
Another large mobile portal. m4u is an extensive list of mobile links grouped in broad categories like "Handy", "Tools" and "Popular". You can also search by name or browse a more specific set of categories (click "Links" to find the category list). The site is available in English and Dutch and carries links in both languages. Changing the interface language doesn't seem to filter the link list to include only sites in the selected language, an advantage only if you are bilingual. The site also has an iPhone version at http://m4u.mobi/iPhone. The iPhone version worked fine in S60WebKit and Opera Mini but other than a larger font it didn't seem to offer any extra features. You are supposed to be able to create your own list of favorite sites but this feature did not seem to work. After selecting "Edit #Favs" an "F" to add the lin to your favorites is supposed to appear next to each listing but I never saw the the "F" link.