When looking at the sponsorship page (http://www.postgresql.org/about/sponsors/) I noticed a few things regarding the language that I've attempted to clean up with this patch.
The first regards the ordering of the sponsors - they are ordered randomly, not alphabetically, so I corrected the language up top.
The second has to do with the language on the bottom of the page discussing the sponsorship levels and selection process. I reworded the sentences to more clearly state the purpose of the sponsorship levels are and how they are selected, maintaing a link to the guidelines on the wiki.
s/Sponsors are display/Sponsors are displayed/
s/using following/following/ although perhaps "in accordance with"