Buzzing Spider (I believe)

[andythilo]

My wife didn't name him, she said he looked sinister and untrustworthy

Not sure about the composition but that's where he was hanging.

Buzzing Spider by Andy Thilo, on Flickr

 

[RyanB]

Nice shot of what looks like a Timothy to me... Hard to tell but it could be a running crab spider as well.

 

[alfbranch]

I agree with Ryan maybe not Timothy but probably Boris
Turn the shot 90 deg clockwise with the spider heading down I think it improves it.