A new blog that was brought to my attention, Memorabilia Antonina, lists in its "Links" column this interesting page:
Portal: Classical Civilisation - Wikipedia, the free encyclopedia.
I too have linked Wikipedia, through various individual pages, in my more recent posts. It seems that they are going into Ancient History and the Classics in a big way.
I am still somewhat hesitant using Wikipedia, so all I can say is, "use it with a hefty grain of salt." I hope that recent untoward events at Wikipeda have made the operators of the site more watchful. But unfortunately, there will always be people with an agenda, pranksters aside.