This affects all accounts, including paid ones: by default, outbound links to certain sites are being pushed through a site that generates revenue for LJ, and also breaks any links that partly pattern-match with one of the sites they're checking for (e.g. crittersbythebay.com is parsed as an ebay.com link). So if you want to generate your own revenue via affiliate links, LJ is blocking you from that without telling you and while deliberately obfuscating the fact that it's doing so. Fun times.
So yeah, spread it around.