Of all the family genealogical pages I've run into (and I believe I've seen thousands), the Whitney Research Group is the best of the crop. It is well organized and full of useful information to anyone researching the surname Whitney. It is a wiki page design, which is sometimes slow to load, but well worth your wait.
They are very good at noting where the information comes from. They offer a transcription of the old Whitney Genealogy with proper caveats. They offer original research such as Robert Ward's take on Thomas Whitney. In their medieval Whitney pages, they footnote very well.
I guess because this is a team effort they are more conservative in expressing genealogical opinions. If you look at my proposed royal line of John Whitney and then look at the key characters at this web site, you'll see that they are reluctant to make two of the connections (Sir Robert to Robert of Castleton is only tentatively given and even then not as second son which he must have been). They also preserve the old visitation listing of maternity of Sir Robert's children, even though that it is an unproven proposition. Then under Robert of Castleton they don't connect his son Thomas with the Thomas of Westminster at all.
They seem to be current and certainly, this is a model for all future genealogical web site creators.