Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_1_3 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7E18 Safari/528.16)

The "next page" link on a long thread has become a bigger target. Thanks for this change.
The proximity of this button to the subscribe/unsubscribe link has been an issue in the past so hopefully this makes it less likely to click on the latter by mistake.