Not very current unfortunately - there are WAY too many really great guides out there that are completely useless now that I6 and ED have ruined them. Don't get me wrong I appreciate the guides very much. I still go there for info on sets I've never experimented with, but actual posted builds really don't mean a lot at the moment.
Best we can do is wait until those that put all the work into writing these can update for post-ED.
If you look in the Guide to Guide section, you will see that CuppaJoe has very kindly put the Issue number next to the guide as follows (very briefly, just to make the point):
[ QUOTE ]
GAMEPLAY GUIDES
Philotic Knights Combat Handbook (PhiloticKnight) [I6]
R_M's Comprehensive XP Gain/Debt Loss Guide v5.0 (Robotech_Master) [I5]
A Guide to CoH For New Players From Old MMOs (Adam7) [I5]
Beginner's Guide to City of Heroes (MapSevered) [I5]
A New Player's Guide to the Post-Winter-Lord World by Amberyl [I3]
(New) Player Guide (Roughneck_Doc) [I3]
[/ QUOTE ]
See the [I1-6]?
The I1-6 refers to the Issue number. We're currently on Issue 6. Many of the powers described in Guides that predate Issue 5 have been changed dramatically. Probably 98% of the slotting information in the build guides is no longer valid.
If there is no Issue number, you can simply look at the date of the original post and it will tell you when the guide was written. If the guide is more than 3 months old, it is likely that some of the information contained in that guide is out of date.
You may very well be able to contact the writer of the guide by clicking on the writers name and looking at his/her most recent post to get an idea if they are still active or not on the forums. If they have recent posts, and you found thier guide to be useful and wish to learn more about the updated information, you can click on the link to send the user a Private Message. They may very well be willing to assist you, especially if you are polite and use proper grammar and spelling.
Some of the non-build guides such as key binding, CoH vocabulary, gameplay tips, et cetera are likely still valid.
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson
Coldfront is all about the guides, and finding updates to the oldies but goodies is hard for sure. 
Just curious, I've seen several great guides, but they all seem to revolve around I4. Most of them recommend you six slotting something, then filling 5 if not all 6 with the same enhancements. Since I6 came out, anything over 3 slots of the same enhancement is said to be a waste. Sooo, how accurate is that? Is 4 or more same-slotting obsolete?
Thanks for any help to come this way.