I recommend some non-breaking spaces in the footer list of network sites. In the screenshot below, "home improvement" and "area 51" are awkwardly broken up over two lines. Replacing spaces with inside site names would prevent this.
It looks like this has been addressed for the Beta sites, but not for all footer links in the graduated sites.
i.e. a sample of the HTML from the beta site template:
However the graduated sites (for example looking at the HTML on http://stats.stackexchange.com/) shows that most of the sites with spaces don't have non-breaking spaces in the text (with the exception of the Home Improvement link, which does).
Being the sad man I am, I trawled all the graduated sites to see if it's an issue elsewhere, and found the following:
For instance the link for 'SciFi & Fantasy' is wrapping in the footer of:
Also on http://android.stackexchange.com/ the 'user experience' link wraps too.