Is there any way to increase the font size in Meebo?
Ideally I want the layout to not be affected (i.e. it shouldn't look broken), and I want the setting to only apply to Meebo and not all the other websites I visit.
If you use Google Chrome, there is an extension called Font Size Increase that may be of use to you.
If you use Firefox there is an add-on called NoSquint which can be set for all sites or specific sites.