Dead links and advertising drop my rating from a 5. On the plus side it's pretty easy to strip out the advertising and dead links. If your new to social bookmarking. Please be aware that quite a few of these favicons and sites are now defunct. Others link to beta pages that no longer exist. You should definitely review and delete the ones you don't want from the mod_vivobookmarks15.php file.

BTW- get used to this. Social bookmarking sites are "turbulent" at the moment. Many of them are be bought, absorbed or just plain going bye bye.

IF that doesn't bother you, this is a nice module. Does what its supposed to. Also a very nice template for adding in your own links.