4
Of the two,
http://www.xoops-magazine.com/modules/wordpress/new-module-social-bookmarks/is by far the better one. The first one is not a true module, has only a handful of social sites and not all of the major ones, and requires customizing the theme. In my incompetence, I failed to get it to work.
Then, I tried the one at xoops-magazine. It is a real XOOPS module, supports about 20 social sites, and requires very little administration. You just choose where you want to put the block.
If you want to reorder the listing of social bookmarking sites, then just reorder the list in this file:
/modules/social_bookmarks/blocks/social_bookmarks.php
If you want to see it working, I have it in a lower left hand block on all pages of my site,
The Skilled Investor.
By the way, you will need to register first at xoops-magazine to download it. The site is in German, so click the small British flag, if you want English.
... a very nice module with the best icon that I have seen yet in the XOOPS system administration window. A big thanks to Rene Sato for this one!