make sure the web site uses proper english
The most common thing I stumble upon is improperly connecting words, and improper capitalization of certain words, I'll share a few examples:
"Group chat support (with MUC protocol), invitation, chat to groupchat transformation, minimize groupchat to roster"
At the beginning it's called correctly group chat, but then afterwards it's being improperly connected, "groupchat".
"Emoticons, Avatars, PEP (user activity, mood and tune)"
Why is avatars capitalized? It's a simple word that refers to a feature. It would be like capitalized Weel of a car, which would not be correct, unless it's at the beginning of a sentence of course. :)
The feature list on the homepage is a good example, which I got the sentences from above. Some list entries are written properly, while others have improperly capitalized words.
This goes on through out the whole website, and especially in the change logs.
I'd be happy to help out and clean the website up, ensuring it has very proper and correct writing. :)
My XID (XMPP ID ;p) is fred@autistici.org.